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Contents
2l I Easl Ciricago
Avenue
' Chicago,
Illjnois 60611
- 312-440-2795.
Fax.312-440-2820
ll-Mail . [email protected]
. Websit.e:
u,wrv.ASDAnet.org
TEST
PACKET
I_M
National
Board Dental Examination
Fart I
(Compiled,
released
items
from
approximately
1 998-2005)
Page
R a n d o m l y
o r d e r e d
t e s t it e m s . . .
. . . 3
A n s w e r
K e y . . .
. . . 2 2
V t / h i c l r o { t h e f o l l o w i n g n e r v e s i r r n e r v a l e s t h e i n i e r i o r b u c c a l n r u c o s e o f 1 l ' r e { l o o r o f t h e o r a l c a v i l y ? A F a c i a l B Trigerrrirral C L i r r g u a l D . M y l o h y o i d E H y p o g l o s s a l
Each of the follov'ring structures increases the s u d a c e a r e a o l t h e s m a l l in t e s t i n e E X C E P T o n e . W h i c h o n e i s t h e E X C E P T I O N ? A . V i l l i B . R u g a e C . M i c r o v i l l i D B r u s h b o r d e r E . C i r c u l a r f o l d s
The inferior parathyroid gland develops from which of the following structures?
W l r i c h o l t h c f o l l o w i n g m u s c l e s p a d i c i p a l c s i n f l e x i o n a 1 l i r e g l e n o - h u n r e r a l a n d lh e h u m e r o - u l r r a r j o i n l s ? A D e l l o i d B . B r a c h i a l i s C B i c e p s b r a c h i i D. Triceps brachli E C o r a c o b r a c h i a l i t
Cell bodies of sympalhelic fibers in the nerve o{ the pterygoid canal come from which of the f o l l o w i n g ?
A. Facial nerve
B . S u p e r l o r c e r v i c a l g a n g l i o n C. Greater petrosal nerve D. Glossopharyngeal nerve E . O t i c g a n g l i o n I n t h e u p p e r l i m b , w h i c h o f t h e f o l l o w i n g r e p r e s e n t s a h a l l m a r k o f l y m p h a l i c v e s s e l s ? A. Contain valves B . F o l l o w t h e v e i n s C. Aiways travel in palrs
D. Only found on the anterior surface of the l i m b
E. Contain fenestrations to allow passage of fluids into the interstitium
Which of the following nerves is associated with the second pharyngeal arch?
A. Vagus
B . G l o s s o p h a r y n g e a l C. Accessory
D . M a n d i b u l a r E . F a c i a l
The nruscles o{ facial expression are cjerived fronr wlrich oI the following?
A. Fronlonasal process B Firsl arch
C Second arch D . T h i r d a r c h E. Fiflh arch
Which of the following controls parathyroid gland f u n c t i o n ? A . B C . D , E .
Second pharyngeal arch Fourth pharyngeal arch Fifth pharyngeal arch Third pharyngeal pouch Fourth pharyngeal pouch
A . B . C D . E . Thyroxin C a l c i i o n l n B l o o d le v e l s o f c a l c i u m B l o o d le v e l s o f m a g n e s i u m T h y r o i d s t i m u l a t i n g h o r m o n e
The splenic artery is a branch of which of llre following arterles? A B C D E C e l i a c Lefl hepatic Lefl gaslric M u s c u l o p h r e n i c S u p e r i o r n r e s e n l e r i c 5 . 1 0
11 E a c i r o { t h c - , i o l l o w i r r g c r a n i a l n e r v e s i s a s s o c i a l e d w i t f r l l r c c a v e r n o u s s i n u s E X C E P T o r - r e . W i r i c h o n e i s t h e E X C E P T I O N ? A . F a c i a l B A b d u c e n s C . T r o c h l e a r D T r i g e n r i n a l E . O c u l o n r o l o r
Which of the following nerves innervales tlre taste buds o{ the anterjor two-thirds of the tongue?
T h e n e r v e s o f l l r e ln l e r n a l t h o r a c i c w a l l li r -i m r l e d -i a l e l y d e e p t o w l r i c h l a y e r o f t h e w a l l ? A B . C D E Exlernal intercostal l n l e r n a l i n t e r c o s l a l Transversus tlroracis P a r i e t a l p l e u r a S u b c o s t a l s
Which of the following represents the condition itr which a radiograph ot a 1}-year-old patient's maxilla shows that two succedaneous teeth are a b s e n l ?
A . M e s i o d e n s B . G e m i n a t i o n C . D e n s in d e n t e
D . L a l e n l o d o n l o g e n e s i s E Partial anodontia (hypodontia)
Where is the channel of communication between t h e m a x i l l a r y s i n u s a n d th e n a s a l c a v i t y s i t u a t e d ?
A I n f h p s r r n e r i o r n e s a l m e a t u s B I n t h e q n h e n n e l h m o i d a l r e c e s s
C I n t h e m i d d l e n a s a l m e a t u s , a t t h e s e m i l u n a r hiatus
D. At the anterior extremity of the inferior nasal meatus
E Al the poslerior exlremity ol the inferior nasal meatus
In the temporomandibular joint. a very dense collection of organized elastic fibers is found in which of the following areas of the articular disc? A. Anterior band
B. Posterior band C. Intermediate band
D. Poslerior-inferior lamina of tlre bilaminar zone
F . P o s l e r i o r - s r r n e r i o r l a m i n a o { l l r e b i i a l n i n a r zone
Which of the following represenls a muscle tlral n t i g l r t a s s i s l i n d e p r e s s i n g t h e m a n d i b l e ? A Masseler B. Stylohyoid C. Tenrporalis D. Geniohyoid E Medial pterygoid 1 6 1 7 .
1 2
1 3 A . B . C D E . V a g u s F a c i a l T r i g e m i n a l H y p o g l o s s a l G i o s s o p h a r y n g e a l A d e v i a t i o n o f t h e t o n g u e , w h e n p r o t r u d e d , a w a y f r o m th e m i d l i n e r e s u l t s f r o m d a m a g e t o w h i c h o f the following cranial nerves?B V I I D . X I E . X I I
Which of the followlng exhibits phagocytic activity in the central neryous system?
A . E p e n d y m a l c e l l B . M i c r o g l i a l c e l l C . O l i g o d e n d r o c y t e
n E ; h . ^ , , - ^ ^ + , ^ ^ \ r r u t v u J d > L t v u y t g/ . ^ E D , ^ { ^ ^ t ^ - - ; ^ ' , v r v p r o o r r r r u o s r r O C l l €^ ^ +
-Each of the foilowing cell layers is derived fronr o r a l e p i l h e l i u m E X C E P T o n e . W h i c h o n e i s t h e E X C E P T I O N ? A . D e n t a l f o l l i c l e B . S t e l l a t e r e t i c u l u n r C S t r a l u m i n l e r r r r e d i u n r D . I n n e r e n a n r e l e p i t h e l i u r n E . O u l e r e n a n r e l e p i t i r e l i u n r ' 1 8 4 A I J . t c
2 0
1 A
21
T l r e o r g a r r i c c o r n p o n e n l o f d e n i i n ts c o n r p r i s e d p r i n r a r i l y o i A . k e r a l i n . B r e l i c u l a r f i b e r s . C l y p e I c o l l a g e n . D t y p e ll a n d l l l c o l l a g e n . E o x y t a l a n f i b e r s . E a c h o f t h e f o l l o w i r r g s t r u c t u r e s l e a v e s t h e c r a n i u m b y w a y o f t h e ju g u l a r f o r a m e n E X C E P T o n e . W h i c h o n e i s t h e E X C E P T I O N ? A C r a n i a l n e r v e lX B . C r a n i a l n e r v e X C . C r a n i a l n e r v e X l D . C r a n i a l n e r v e X l l E S i g m o i d s i n u s - i n t e r n a l j u g u l a r v e i n E a c h o f t h e f o l l o w i n g v e n o u s c h a n n e l s h a s d i r e c t connections with the pterygoid venous plexus F X C E P T o n e . W h i c h o n e i s t h e E X C E P T I O N ? A . M a x i l l a r y v e i n B. Verlebral vein C . D e e p fa c i a l v e i n D . I n f r a o r b i t a l v e i n f P o s t e r i o r s u p e r i o r a l v e o l a r v e i n S t i m u l a t i o n o f t h e l e s s e r p e t r o s a l n e r v e in a n a d u l t causes secretion by which of the following glands? A. ParotidB L a c r i m a l C . S u b l i n g u a l D S u b m a n d i b u l a r
E . G l a n d s o f t h e h a r d p a l a t e Amelobiasls will not differentiate from p r e a m e l o b l a s t s u n l e s s t h e y A. contact denlirr B . a r e lo u c h e d b y o d o n t o b l a s l p r o c e s s e s C . a r e t o u c h e d b y s t r a t u m i n t e r m e d i u m D . c o n t a c l s t e l l a t e r e t i c u l u m E . c o n t a c t n e u r a l c r e s l m e s o d e r n . t C e l l s th a l w i l l l o r n r l l r e v e d e l - r r a e h a v e th e i r o r i g i n irr whicl'r o1 the followirrg?
A Nolochord
B N e u r a l a r c h
C Dernramyotome
D Two pairs of somiles
E I n l e r m e d j a t e m e s o d e r r n a l p l a l e T h e n a s o l a c r i m a l d u c l d r a i n s i n l o w h i c h o f i h e following? A . M i d d l e m e a t u s B. lnferior meatus a - Q r r n e r i n r m e z i r r c l - ) S n h o ' r n e l h m n i r l : l p g g g g 5 T h e c a r o t i d s h e a t h e n c l o s e s e a c h o f t h e f o l l o w i n g
structures EXCEPT one. Which one is the E X C E P T I O N ?
A. Vagus nerve B. External carotid
n t ^ { ^ , ^ ^ t i . , ^ , , 1 ^ - . , .
r - . I n r e r n a r J U g u r a r v e r n D. Common carotid artery
Following eruption and initial occlusal contact in the oral cavity, a tooth will continue to erupt in order to compensate for occlusal wear. In response to this continuous eruption, which of the following is deposited at the apex of the root?
A. Primary dentin B. Secondary dentin C. Reparative dentin D . C e l l u l a r c e m e n t u m E . A c e l l u l a r c e m e n t u m
Which of the following cells is most likely to be e n g a g e d i n m i t o s i s a t a n y g i v e n t i n r e ? Osleocyte i r ^ ^ - ^ , . t - ^ ^ ^ , v r o u r v y r r d v E Plasnra cell Chorrdrocyte Basal keralinocyte 1 J ) a 2 B z Y . . A 2 q 3 0 . A . B . C D-E .
F i b r o c a r l i l a g e n o r n r a l l y o c c u r s l f l A . e p i g l o t t i s E . e x t e r n a l e a r . C . e p i P h Y s e a l P l a t e . D i n l e r v e d e b r a l d i s c s . E . C - s i r a p e d r i n g s ir r th e w a l l o { t h e l r a c h e a T h e r e is a d i s l i n c t c h a n g e i n t h e t y p e o f s u d a c e e p i t h e l i u m a l t h e ju n c l i o r r o f t h e
Sharpey's frl-rers lronr the pettodontal liganrertt inserl irrto wiriclt o1 the following slruclures? A . B u n d l e b o n e a n d d e n l t t r
B . C o r l l c a l P l a l e s a n d d e n l i t r C . B u n d l e l . . r o n e a n d c e n l e n 1 u n l D . C o r t i c a l P l a l e s a n d c e n r e n l u m E. Haversiatr bone and cenlentut-tr l n a n a d u l t , a B a b i r r s k i s i g n in d i c a t e s d a n r a g e t o A t h e d o r s a l h o r n .
B lower motor neurons. C . u p p e r m o l o r n e u r o n s ' D. the lateral spinothalamic tract' E. the dorsal spinocerebellar tracl
Cell bodies of neurons mediating proprioception from the periodontal ligamenl of the maxillary first
m o l a r l i e P d m a r i l Y i n t h e A s e m i l u n a r g a n g l i o n . B. motor nucleus of V. C. sPinal nucleus of V. D. chief sensory nucleus of V' E. mesencePhalic nucleus of V'
In hydrocephalus, excess cerebral spinal fluid is found within whjch of the following?
A. Ventrlcle B . S u b d u r a l s P a c e C. Cisterna magna D. Subarachnoid sPace E . S u P e r i o r s a g i t t a l s i n u s
Intelligence and sensory-motor functions of a patienl appear 10 be inlact' Horvever' the patierri tacks self-discipline and has exhibited anti-social belravior. He is unable to plan for the future or to o r g a n i z e b e h a v i o r s i n t o lo g i c a l s e q u e n c e s A l e s i o n in wl.rich o{ the following areas is likely?
A. Frontal lobe B . O c c i P i t a l l o b e C . l r r l e r n a l c a P s u l c D. TenrPoral lobe E . P a r i e t a l l o b e
3 7 .
3 1
'))
A . o U . C D . E . o r o p l r a r y n x a n d e s o P n a g u s e s o p h a g u s a n d s t o n r a c h . f u n d u s a n d PYlorus. d u o d e n u m a n d je j u n u m . i l e u m a n d c o l o n . 3 8 3 93 3 ln which of the following would fenestrated
c a p i l l a r y p l e x i b e f o u n d ? A . B . C . D E . Predentln D e n t a l p u l P C e l l u l a r c e m e n t u m P e r i o d o n t a l l i g a m e n t R e d u c e d e n a m e l e P i t h e l i u m J 4 S u b m u c o s a l g l a n d s a r e u s u a l l y lo c a t e d i n t h e A . f u n d u s o f s t o m a c h . B . d u o d e n u m . C . a p p e n d i x , D . j e . l u n u m . E . c o l o n .
Difficulty in raising the shoulder might be tl.re result o { d a m a g e t o w h r c h o f t h e f o l l o w i n g c r a n l a l nerves? B . V I I C X D . X I E , X I I
A slab wound crealing a pneunrollrorax on tlre le{l s i d e w i l l u s u a l l y r e s u l t in c o l l a p s e o f w h i c h o { l h e {ollowing?
A T h e l e f l l u r r g o n l Y
B. The right lurrg ot-tlY
C . B o l h l u n g s
D The rill cage on tlre le{l side
E l-he le11 lung and pericardial sac
4 0
? q
A 4
4 2 . T h e t r e u r o n s o l t f r e c e n l r a l n t i r v o u s s y s l e n r t h a l 4 7 . l M u c o s a o f t h e a r r t e r i o r 1 w o - t h i r d s o 1 l l r e lo n q u c : i n n e r v a t e r n u s c i e s d e r i v e d i r o n ' r b r a n c h i a l a r c h e s a r e f o u n d in w h i c l r o f t h e f o l l o w i r r g n u c l e i ? A N u c l e u s a r n l t i g u u s B i - l y p o g l o s s a l n u c l e u s C D o r s a l n r o l o r n u c l e u s o f X D N u c l e u s o f E d i n g e r - W e s t p h a l E S u p e r i o r s a l i v a l o r y n u c l e u s d e v e l o p s p r i n r a r i l y f r o n r A . R a l h k e ' s p o u c h . B tuberculunr rnrpar. C . { o r e g u t e n d o d e r n r D h y p o b r a n c h i a l e n r i n e n c e E l a l e r a l i i n g u a l s w e l l i n g s . 4 8 . l n i l i a l l y , t h e d e v e l o p i n g h e a r t i s 43. Which of the foilowing represents the basis for the
t o p i c a l a p p l i c a t i o n o f f l u o r i d e s i n d e n t a l c a r i e s A i n d u c e d b y t h e n o t o c h o r d .
prevention? B posilioned poslerior to the notochord.
C p o s i t i o n e d a n t e r i o r t o t h e p r o c h o r d a l p l a l e . A F l u o r i d e p e n e t r a t e s t h e e n a m e l t h r o u q h t h e D . b e t w e e n t h e p r o c h o r d a l p l a t e a n d th e
l a m e l l a e . n o t o c h o r d .
B K e r a t i n c o n t e n t o f t h e e n a m e l i s m a d e m o r e i n s o l u b l e .
C Fluoride coats the looth forming a uniform 49. Melanocytes migrale to the lamina propria of the - - ^ . ^ - , i . . ^ b a r r i e r .
P r u L s u l r v ' u d r r r s r ' , o r a l m u c o s a f r o m w h i c h o f t h e f o l l o w i n g ?
D . T h e p r i m a r y c u t i c l e , b e i n g le s s c a l c i f i e d ,
absorbs the fluoride. A. Myolome
E Acid solubility of the surface enamel is B. Dermatome
reduced by the fluoride. C. Sclerotome
D. Neural crest E. Rathke's pouch 44. Which of the following represents the primary
m l n e r a l c o m p o n e n t o f a l v e o l a r b o n e in t h e
periodontium? 50. Blood from the cephalic vein drains into which of
the followinq veins? A O s l e o i d
B E l a s t i n A . B a s i l i c
c . C o l l a g e n B . B r a c i o c e p h a l i c
D. Hydroxyapatite C. Axiliary
F G r o u n d s u b s t a n c e D . I n t e r n a l t h o r a c i c E. Superior vena cava 45. Which of the following represents the primary
function of cementum? 51 . Coupled respiration requires each of the following
E X C E P T o n e . W h i c h o n e is t h e E X C E P T I O N ? A Attach Sharpey's fibers
B. Protecl tl.re root from caries A. ADp
C . R e p a i r t r a u m a l i c i n j u r i e s o f t h e r o o t B . O x y g e n D S u p p l y n u t r i t i o n t o t h e p e r i o d o n t a l l i g a m e n t C . C a r b o n d i o x i d e E . M a i n t a i n t h e w i d t h o f t h e p e r i o d o n t a l D . E l e c t r o n d o n o r r r g a m e , . . r l E . I n o r g a n i c p h o s p h a l e 4 6 . T h e ju n c t i o n b e t w e e n t h e to o t h s u r f a c e a n d t h e 5 2 . l f t h e a n t i c o d o n o n l r a n s f e r - R N A i s 5 ' A C G 3 ' . t h e r r c r e r r i c u l a r e p i l h e l i u n r i s c o n r p o s e d o f w h i c h o f l l r e w h i c h o f t h e fo l l o w i n g i s i t s c o r r e s p o n d i n g c o d o n f o l l o w i n g ? o n m e s s e n e e r - R N A ? A . C e n r e n t o i d A . 5 ' C G T 3 ' B . T i g h l j u r r c t i o n B . 5 C G U 3 ' C . I n t e r r l e d i a l e f r l a n r e n l s C 5 ' T G C 3 '
D. Basal larrrirra-like slructure D 5' UAG 3'
5:1 W h jc h of thr: follovying i s t h e n r a j o r s t o r a g e l o r n r o i i r o r r i n t h e l t o d 5 r ? A l r a r r s f e r r i r r B . H e m o s i d e r i n C Apoferritin D . H e m o g l o b i n r F e r r i l i n
W h e n a nrammalian r e d b i o o d cell is piaced in 0.3 per cenl sodiunr chloride, waler moves across ilre cell membrane by wlrich of the following
processes? A O s m o s i s B . H e m o l y s i s \ - r r n o c y l o s i s D. Active transport F Diffusion
Free fatty acids in plasma are t m e t a b o l i c a l l y i n e r t .
: mainiy bound to [beta]Jipoproteins. I i n d e p e n d e n t o f e p r n e p h r i n e s e c r e t i o n . D. mainly associated
with serum "fOui-r'in lacf of the foliowing is required for normal blood clot formation EXCEpT one. Which onu i. ti" E X C E P T I O N ? A C a + + 1 1 . f l a s m i n 1,. I hrombin D . V i t a m i n K E . P r o t e o l y s i s 5 8 E a c h o f t h e follovring i s a n a n l i c o a g u l a n l E X C I _ p T o n e . W h i c h o n e is t h e EXCEpTIOI!? A . H e p a r i n B . V i i a m i n K C Dicurnarol D . S o d i u m c i l r a t e F . A n y a n l i t h r o n r b j n s u b s t a n c e 54
yhl:h of the foilowing combines with heparin to r n h i b i t b l o o d c l o t t i n g ? A . A n l i - t h r o n r b i n l l l B P l a t e l e t s I F i b r i n o g e n D . p l a s n r i n o q e n t r . | l t r o n r b i n
The characleristic of tne aorla lhal is nrosl responsible for the maintenance
of diastolic blood pressure is its
A . w i d e lu m e n .
B. elastic distensibility. C . p r o x i m i t y 1 o lh e n e a n . D. greal peripherat resistance. E. aclive contraction.
Colloid osmotic pressure of the blood is important D e c a u s e i t
A. nourishes biood ceris. ? aids in blood ciotting.
9 prevents loss of eryihrocytes from the blood. ? prevents excess loss of riuio trorn caiiiiaries. E. prevents entrance of tissue fluid into
capillaries.
\A/hich of the following is most iikely to promote depolymerization of extracellular matrix? A. Cortisone B . C o l l a g e n a s e C. Chymotrypsirr D. Hyaluronidase
Which portion of the nervous system contains the car0lac, vorriting, and vasonrolor centers? A . M e d u l l a
B . T h a l a m u s C. Cerebrurr
D. Cervical region of tne spinal cord 5 9 60 q q 5 6 6 1 62
0 3
T l r e c o n c e n t r a l i o n o 1 w l r i c h o { t h e f o l l o w i r r g a c l d s c a n l . . i e u s e d 1 o d c l e r n - r i n e v y h e t h e r o r d e n l j n h a s c o n t a n r i n a l e d a p u r i f i e d e n a n r e l pre ltaration? A . L y s i r r e B P r o l i n e C . H y d r o x y p r o i l n e D . P h o s p h o l y r o s i n e E . P h o s p h o s e r i n e P r i o r t o s u r g e r y . a r r a n x i o u s ; l a l i e n l h a s a h i g h c r systr-ilic blood ;tressure than previously no1er1. W h i c h o i t h e fo l l o w i n g r e ; l r e s e n t s t h e m o s l Ii k e l y reason'-/ A C a r d i a c s h o c k B . A n a p h y l a c l i c s h o c k C . A t r i a l f r b r i l l a t i o n D. Ventricular frbrilialiorrE. Decreased arterial conrpliance
Reduced renal blood flow can cause hypertenston by which of the following?
A Release of renin
B. Refiex vasoconstriction C. Retention of potassium in blood D . I n c r e a s e d o u t p u l o f e p i n e p h r i n e Which of the following describes the effect of a drug thal inhibits renal carbonic anhydrase? an']r|o n o t 6 B b4 6 5 C a l c i u m i s t r a n s p o r t e d i n t h e b l o o d jn c o m b i n a t r o n w i t h w h i c h o { t h e f o l l o w i n g ? A . A l b u m i n B Citrate C . H e m o g l o b i n D . B e t a - g l o b u l i n S y m p a t h e t i c s t i m u l a t i o n m o s l li k e l y p r o d u c e s w h i c h o f t h e f o l l o w i n g ? 6 9 7 0 A . B . a D . E . Glycogen synthesis B r o n c h i a l d i l a t i o n
Decreased mental activity Decreased metabolic rate Increased blood flow to the skin
l N a " l
l c t ' l
l K * l
C o l l o i d
o s m o t i c
p r e s s u r e
Total
osmotic
pressure
B . n
It decreases urea clearance. It increases the Tm for giucose. It increases the acidity of the urine. It decreases sodium reabsorption in the proximal tubule. B o n e E n a m e l C a l c u l u s Oral bacteria S a l i v a 6 6 . W h i c h o f t h e f o l l o w i n g i s t h e s a m e v a l u e for
i n t r a c e l l u l a r a n d i n t e r s t i t i a l f l u i d ? The composition of plaque is most similar to whicn of the following? 7 1 A B . C . D . E . A , B . (-D E . W h i c h o f t h e f o l l o w i n g e x p l a i n s why an increased f r l l i n g o f t h e v e n t r i c l e d u r i n g d i a s t o l e causes a more {orceful hearl beat? The increased ventricular v o l u m e
A dinrinislres ilre refractory period of the
ventricle
B i n c r e a s e s e r r d - d i a s t o l i c f i b e r l e n g t h . C . f a c i l i t a l e s c o n d u c t i o n ir r tl r e l r e a r l . D . p r o d u c e s a l e s s i l r a r r oplirlal load.
Which of the following substances is the
predominanl source of ATP at MODERATE levels (for greater than 60 nrinutes) of activily?
A . A m i n o a c i d s B. Fatty acids C. Carbohydrales D. Proleins 7 2 6 7
7'J W l r i c h o f t h e f o i l o w i n g s u l l s l a n c e s h a s a c l e a r a n c c : r a l c r t h a l i s g r e a t c r t h a n th e g l o r . t r c r u l a r f i j t r a l i o n r a l e ( G F R ) ? / \ P a r a - a n r i n o h i p p u r i c a c i d ( p A l l ) B P o l a s s i u m C G l u c o s e D Urea W h a l i s t h e b i o l o g i c a l s i g n i f i c a n c e o f t h e e x t e r r s i v e d e g e n e r a c y o f t h e g e n e t i c c o d e ? A . A l l e r s th e a m i n o a c i d sequence o f p r o t e i n s e n c o d e d b y t h e D N A B . M i n i m i z e s t h e d e l e t e r i o u s e f l e c 1 o f m u t a t i o n s C . M a x i m i z e s t h e b e n e f i c i a l e f f e c i o f m u t a t r o n s D . I n c r e a s e s c h a i n t e r m i n a i i o n
E Leads to active proieins
Which of the following types of blotting can be used to identify DNA restriction fragments?
A. Eastern
B . S o u t h e r n C . N o r t h e r n
D. Western
The catabolism of which of the following results rn no energy production in the form of ATp?
A L i p i d B. Protein C . N u c l e o t i d e D . C a r b o h y d r a t e
\&hich of the following substances is released by b l o o d p l a t e l e t s a n d c a u s e s p l a t e l e t s t o s t i c k t o g e t h e r ? A . T h r o t r b i n B F i b r i n o g e n C P h o s p h o l i p i d s D. Thromboxarre ,A2 E. Prostacyclirr 12 (Pglz) P e p l i d e h o r r r r o n e s g e n c r a l l y e x e r l t h e i r e l l e c l t h r o u g i r w h i c h o f t h e io l l o w i r r g ' l A . I n t r a c e l i u l a r r e c e p l o r s a n d s l j n r u i a l i n g p r o l e i l synthesis
B Receptors on the cell nrenrbrarre arrd s t r n r u l a t i n g p r o l e i n s y n t h e s i s
C . I n t r a c e l l u l a r r e c e p t o r s a n d a l t e r i n g t h e specific activity of ceflain enzynres D. Receplors on the cell menrbrane and
a l l e r i n g t h e s p e c i f i c a c t i v i l y o f c e d a i n enzynres
D u r i n g t h e p e r i o d o f i s o v o l u m e t r i c c o n t r a c l i o n , whlch of the following happens?
A . T h e s e m i l u n a r v a l v e s a r e o p e n .
B. The left ventricular pressure is rising rapidiy. C. The aortic pressure is slightly less than the
left ventricular pressure.
D . T h e r i g h l v e n t r i c u l a r p r e s s u r e i s g r e a t e r t h a n the left ventricular pressure.
Glucose reabsorption in the nephron is usually completed in which of the following?
A. Distal tubule B . L o o p o f H e n l e C . C o l l e c t i n g d u c t D . P r o x i m a l t u b u l e
Which of the following represents the correct size and characteristic of the nerve fibers thal conduct sensory input of pain fronr the oral-facial region? A Large diameter, myelinated
B . S m a l l d i a m e t e r , m y e l i n a t e d C . L a r g e d i a m e t e r . u n m y e l i n a t e d D . S m a l l d i a m e l e r , u n n r y e l i n a t e d
E . I n l e r n r e d i a t e d i a m e t e r , n r y e l i r r a t e d As blood flows through the periodontal nrenrbi-ane. tremendous pressures occur in response to
force{ul occlusion. Blood flow is temporarily r e d u c e d , b u l p l a l e l e t s d o n o t a g g r e g a l e b e c a u s e o f the presence ol A . C a " . B . A D P . C . l h ro n r b i n . D thronrboxane A2. E . p r o s l a c y c l i n ( P g 1 2 ) . 7 8 7 4 7 9 . 7 5 8 0 . 7 6 7 7 o t 82
1 0
8:i /\n exanrl-rlr: o1 synergistl is; ihe eflecls of P , . i r r s u l i n a n d g l u c a g o n o n b l o o d g l u c o s e . B e s l r o g e n a n d p r o g e s l e r o n e o t . t u l e r i n e m o l i l i t y C g r o w t h h o r n r o n e a n d t h y r o x i n e o n s k e l e l a l g ro\4/1lt . D a n l i d i u r e l i c h o r n r o n e a n d a l d o s l e r o l r e o n p o l a s s l u n r e x c r e l i o r r
The jarv jerk re{lex is an exanrple of wlrrch of ilre following refiexes?
A . L o a d B . F l e x o r C. Withdrav,ral D . D y n a m i c s t r e t c h
The stretch refiex is an example of which of the following refiexes?
A . W i t h d r a w a l B . N o c i c e p t i v e C . P o l y s y n a p t i c D . M o n o s y n a p t i c
A patient bites down rapidly on an unexpected hard surface while chewing. Cessation of motor u n l t r e c r u i t m e n t i n ja w c l o s i n g m u s c l e s i s c a u s e d b y s t i m u l a t i o n o f A . m u s c l e s p i n d l e s . B . m u c o s a l m e c h a n o r e c e p t o r s . C . p e r i o d o n t a l m e c h a n o r e c e p t o r s . D . n o c i c e p t o r s l n t h e d e n t a l p u l p . Which of the following slalenrents aboul n o r e p t n e p h r i n e i s c o r r e c t ? A . C a u s e s c a r d i a c a c c e l e r a t i o n B . C a u s e s g e n e r a l v a s o d i l a t i o n C . C a u s e s v a s o d i l a t i o n i n v e s s e l s o f t h e s k i r r D H a s a n e g a t i v e i r r o t r o p i c e f { e c t o n t h e l r e a n E I s l h e p r e g a n g l i o n i c s y n r l t a i l r e l i c n e u r o t r a n s m t t t e r \ / / i r i c h o { t h e fo l i o w i n g n r o l e c u l e s c a u s e s t h c activalic.rrr of ntyosirt kirrase arrcj the corrtracliorr r_r1 snioolh nruscle'/ A. Aclirr B 1'roporrin C C a l m o d u l i n D . C a l c i l o n i n E . C h o l e c a l c i f e r o l
Whicir o{ tlre following is the prinrary diflerence b e l w e e n j u x t a m e d u l l a r y a n d c o r t i c a l n e p h r o n s ? A . R e n a l p l a s m a f l o w B. Filtration fraclion C L e n g t h o f t h e d i s t a l t u b u l e D . L e n g t h o f t h e p r o x i m a l t u b u l e E . L e n g t h o f t h e th j n s e g m e n l o f t h e lo o p o f H e n l e
Which of the following is an essential element found in all cytochromes?
A . C o
B C u
C . F e D . M g E . Z n
Acute cyanlde poisoning would most likely lead to which of the following?
A. Increased oxygen concentration in arterial blood
B. Increased carbon dioxide concentration in venous blood
C. Decreased oxygen extractron by peripheral tissues
D. Increased oxygen extraciion by peripheral l t s s u e s
E. Decreased carborr dioxide concentration rn arterial blood
Chondroitin sulfate is a major component o{ which of the {ollowing?
A H a i r B M u c i n C . C a r l i l a g e
D Bacterial ceil rryalls E . B l o o d g r o u p s u b s t a r r c e B 8 o q B 9 B 5 B 6 9 0 J I B 7 92 1 1
9 3
9 4
\A/lrich of 1l'rc {ollowing characteriz-es Iroth acllvr: t r a n s p o t l a n d f a c i l i t a t e d d i f l u s i o n ?
A H y d r o l Y s i s o f A T P B C o n r p e t i l i v e i n h i l l i t i o n C T r a n s P o r l b i d i r e c t i o r r a l
D T r a r i s p o r l a g a i n s l a c o n c e n t r a t i o n g r a d i e n t Which of the following has the mosl eflect in s t i n r u l a t i n g r e s P i r a t i o n ? A I n c r e a s e i n b l o o d PH B . D e c r e a s e i n a r t e r i a l P O 2 C . I n c r e a s e i n a r l e r i a l P C O 2 D . D e c r e a s e i n b l o o d P H E . D e c r e a s e i n a r l e r i a l P C O 2
Which of the following proteins is involved with b a c t e r i a l a g g r e g a t i o n a n d s u b s e q u e n t e l i m i n a t i o n from the oral cavity?
A . G u s t i n B . S t a t h e r i n C. Lactoferrin D Secretory lgA
Thyroid hormones are synthesized from which of the following amino acids?
A. Tyrosine B . D o P a m i n e C . H i s t i d i n e D . T h r e o n i n e E . T r y p t o P h a n
Which of the following enzymes is responsible for inactivating catecholamines?
A . P h o s p l r o d i e s t e r a s e B . M o n o a m i n e o x i d a s e C . A m i n o d e c a r b o x Y l a s e D. Tyrosine hYdroxYlase
Prolein arrd RNA synllresis occur in eacfr of the { o l l o w i n g p h a s e s o { t h e c e l l c y c l e E X C E P T o n e W l - r i c h o n e i s l l r e E X C E P T I O N ? A . G p B G 1 C S D G 2 E M 9 9 . W 1 - r i c l t n r a i n p r o d u c l o f p r o t e i n n i l r o g e n t r r r : l a l . r o l i s t r l i s lo u n d in h u m a t r u r i t r e ' l A . U r e a B . A n r m o n i a C C r e a l l n e D . U r i c a c i d E . C r e a l i n t t r e
100. Each of the following is expected to be active during fatty acid biosynthesis EXCEPT one Which o n e is t h e E X C E P T I O N ?
A. TricarboxYlic acid cYcle B. PYruvate dehYdrogenase C . A m i n o a c i d c a t a b o l i s m D . B e t a o x i d a t i o n
E. GlYcolYsis
101. Which of the following statements besl describes the roots of a maxillary first molar?
A. The mesiofaclal root usualiy tips mesially in its aPical one-third
B. The palatal root has a concave facial surface.
C. The palatal root is flattened and concave on its mesial and distal surfaces'
D. The distoiacial root is flattened and concave on its facial surface'
102. Which of the following represents the location of the lingual height of contour on the crown of the m a n d l b u l a r s e c o n d P r e m o l a r ?
A . M i d d l e t h i r d B. Occlusal third
C. Same third as that tooth's buccal heighl of contour
D. Same third as the lingual height of contour on the crown of the maxillary prernolars E. Same third as the lingual height oi contour
on the crown of the mandibular first premolar '1 03. When viewed fronr tlre facial aspecl, the crown of
the n.rarrdibular first premolar has an occlusal oulline thal nornrally exlribits which of the loliowing clraracteristics?
A. Cusp tip which is of{sel to the distal B Cusp tip which is cenlered nresiodislally C. Disto-occlusal slope whiclr is lorrger than the
nresio- occlusal sloPe
D. Mesio-occlusal slope which is longer tlran the disto- occlusal slope
9 5
9 6
9 7
9 B
1 0 4 1 w o p u l p c a n a l s arc nrosl commonly f o u n r j in l h e A r o o l o { a m a n d i i r u l a r c e n l r a l i n c i s o r . B l a c i a l ro o l o f a m a x i l l a r y f i r s l p r e n r o l a r . C d i s t a l r o o t o { a m a n d i b u l a r f i r s l r n o l a r . D m e s i a l r o o l o i a r r a n d i b u l a r f i r s l n - r o l a r . E nresrofacial root of a nraxillary fjrst molar. 1 0 5 . I n t h e t r i a n g l e f o r m e d b y t h e p r o j e c t i o n o { t h e
orifices of the canals of a maxillary firsl nrolar, the A l i n e c o n n e c t i n g m e s i a l w i t h li n g u a l i s l o n g e s t B . l i n e c o n n e c t i n g d i s l a l w i l h li n g u a l i s l o n g e s l . C i i n e c o n n e c t i n g m e s i a i w i t h d i s t a l i s i o n g e s l . D a n g l e a t t h e d i s t o l i n g u a l c a n a l is o b t u s e . E . a n g l e a 1 th e m e s i o f a c i a l c a n a l is o b l u s e . 'l 06 Which of the following attaches the root surface to
t h e a l v e o l a r b o n e ? A . C e m e n t u m B A t t a c h e d g i n g i v a C . D e n t i n a l t u o u r e s D . P e r i o d o n t a l i i g a m e n t E . C e m e n t o e n a m e l j u n c t i o n 1 0 7 . W h i c h o f t h e f o l l o w i n g a n a t o m i c s t r u c t u r e s i s f o u n d .1ust lingual to the maxiliary central incisors? A. lncisive foramen B C a n i n e e m i n e n c e C. Maxillary tuberosity D . E x t e r n a l o b l i q u e r i d g e E . G r e a t e r p a l a t i n e f o r a m e n 1 0 8 . W h i c h o f t h e f o l l o w i n g p a p i l l a e w o u l d n o r m a l l y b e f o u n d in t h e b u c c a l v e s t i b u l e ? A . P a r o t l d B . I n c i s i v e C , F u n g i f o r m D . I n t e r d e n t a l E . C i r c u m v a l l a t e '1
09. The bulk of a tooth consists of A . p u l p . B. crown. C . d e n t i n . D . e n a r l e l . E . c e m e n t u n r . f A T h e p a r l o f t h e lo o l h lt , h i c h . a l a g i v e n m o r n e n l . i s e x p o s e d 1 o th e o r a l c a v i l y i s A l l r c a n a l o n r i c c r o w n B the clinical cfown.
C . t h e lu n c t i o n a l c l i n i c a l c r o w n a n d r o o 1 . D m e a s u r a b l y l a r g e r i n y o u n g p e r s o n s i l r a n in
o l d e f p e r s o n s .
E no1 etfected by periodontai health
111. The anatomic crown is that portion of a tooth lhat i s
A . i n o c c l u s i o n .
B . e x p o s e d t o o r a l fi u i d s . C. coronal to the cervical lrne. D . o c c l u s a l t o t h e g i n g i v a l m a r g i n s .
1 1 2 . A p a t i e n t h a s a n e x t r e m e i y w i d e , n o t c h e d t o o t h in t h e m a n d i b u l a r l e f t c e n t r a i i n c i s o r p o s i l i o n . C l i n i c a l and radiographic examinations reveal 28 teeth have erupted, but four third molars have nol erupted. Which of the following conditions exists? A . F u s i o n
B . D e n s in d e n t e
C. Concrescence
D. Dilaceration E . G e m i n a t i o n
113. When compared to a maxillary firsl molar, the roots of a maxillary second molar
A. are longer.
B. are more divergent. C. are fewer in nunrber. D. have less potential for fusion. E . a r e g r e a t e r i n d i s t a l i n c l i n a t i o n . 114. Whlch of the following teeth is tlre most likely to
have a bifurcated root? A Maxillary central incisor B . M a x i l l a r y l a t e r a l i n c i s o r C . M a n d i b u l a r l a t e r a l i n c i s o r D M a x i l l a r y c a n i n e
E . M a n d i b u l a r c a n t n e
115. Which of the following primary teeth does a second prerlolar replace when it erupts into the oral c a v i t y ? A . C a n i n e B . F i r s t p r e m o l a r C. Second prenrolar D First nrolar E . S e c o n d n r o l a r I J
1 1 b . W h i c i r o f 1 i - r e f o l l o n i r r g d e s c r i b e s t h e c o n r a r ; r relalio'sfri1-i i.telwr:e' a rnaxillary ce.lral i.cisor arrri a r . n a x i l l a r y l a l e r a l i n c i s o r ? A C o n t a c t i s o f l s e t 1 o th e l i n g u a l B C o n t a c l i s c e n t e r e d i n c i s o c e r v i c a r r y . C L i n g u a l e n r b r a s u r e i s l a r g e r t h a n lh e l a c i a l e n t b r a s u r e . D I n c j s a l e n r b r a s u r e i s l l r e la r g e s l o { a i l t h e entbrasures. 1 1 7 . I n t h e h o r i z o n t a l p l a n e , a s t h e m a n d i b l e m o v e s rn a l a t e r a l e x c u r s i o n , t h e m i d l i n e o f t h e m a n d i b l e ntoves A. straight anteriorly. B. straight posteriorly. C . s t r a i g h t l a l e r a l l y D . a n l e r i o r l y a n d J a t e r a l l y . E. posteriorly and laterally.
118. A patient presents with symptoms of an acure abscess on the maxillary left laieral incisor. There are no clinical signs of decay or restoration. R a d i o g r a p h i c a l l y , w h i c h o f t h e f o l l o w i n g w i l l m o s t likely be shown as the cause of the abscess? A . A g e n e s i s ts. Dilaceration C. Concrescence D . D e n s in d e n t e E . E n a m e l p e a r l s 1 1 9 . E a c h o f t h e following c a n b e f o u n d in t h e cental p u l p E X C E P T o n e . W h i c h o n e j s t h e EXCEPTION? A. Nerve tissue B . B l o o d v e s s e l s C . C e m e n t o b l a s t s D . L y m p h v e s s e l s 1 2 0 . W h i c h o f t h e f o l l o w i n g m o l a r ro o t s is w i d e f a c i o l i n g u a l l y a n d c o n c a v e o n b o t h n r e s i a l a n d distal surfaces?
A. Distofacial of a maxillary first B L i n g u a l o f a m a x i l l a r y f i r s t C M e s i a l o f a m a n d i b u l a r f i r s l D D i s t a i o f a n r a n d i b u l a r f i r s l
1 2 1 . T h e d i s t o l i r r g u a l c u s l t o f w h i c h o f the follorving nrolars nright be abserrt?
A. Maxillary frrst B . M a r r d i b u l a r f i r s i C . M a n d i b u l a r t h i r d D . M a x i l l a r y t h i r d 1 2 2 l n a r i g h t v ' r o r k i n g n r o v e n r e n t , t h c l i n g u a l c u s ; ; o f a m a x i l l a r y r i g h l s e c o n d p r e n r o l a r p a s s e s t h r o u g l . r w h i c h o f l h e f o l i o w i n g m a n d i b u l a r s t r u c t u r c , s ? A. Facial groove ol the righl first molar B. Linguai groove oI tlre right firsl nrolar C. Embrasure belween the righl firsl prenrolar
a n d th e r i g l r l s e c o n d p r e m o l a r D. Embrasure belween the righl second
prentolar and the righl first nrolar
123. The proximal contact areas belween anterior leeth a r e in c i s a l t o t h e m i d d l e t h i r d o f t h e t e e 1 h . W h i c h o l t h e fo l l o w i n g i s a n E X C E P T I O N t o t h i s ru l e ? A T h e m e s i a l c o n t a c t o { a m a x i l l a r y c a n i n e B T h e d i s t a l c o n t a c l o f a m a x i l l a r y c a n i n e C . T h e m e s i a i c o n t a c t o f a m a x i l l a r y l a t e r a l t n c t s o r
D. The nresial contact of a mandibular lateral incisor
124. When the mandible performs a laterotrusrve movement, the laterotrusive-side condyle moves primarily about which of the following axes? A. Vertical
B. Sagittal C. Horizontal D. Transverse
1 2 5 . D u r i n g a v i s u a l e x a m i n a t i o n o f a p a t i e n t w h o h a s a severe clenching habit, which muscle wouto one expect 1o see enlarged?
A. Masseter B. Temporalis C. Medial pterygoid D. Lateral Pierygoid
126. From the occiusal aspect, wlrich of lhe following represents the nrost frequer-rily seen forrtr of a maxillary second nrolar?
A . R o u n d B . S q u a r e C . T r a p e z o i d a l D . R h o n r b o i d a l E H e a i - s h a p e d 1 2 7 . I n i t i a l i o n o f c a l c i f r c a t i o n f o r th e r r r a n d i b u l a r c e n t f a r ir-rcisor normally occurs al
A B C D E . 3-4 nronlhs of age 1 y e a r o { a g e . 2-3 years o{ age. 4-5 years of age. 6-7 years of age. t 4
1 2 { ' , T f r e o b l i q u e r i d g e o f t h e m a x i i l a r y n i o l a r s e x t e n d s ltt--lween wfrjoh lwo cusps?
A M e s i o { a c i a l a n d d i s l o i a c i a l B l r / e s i o l i n g u a l a n d d i s l o l i n g u a l C l M e s i o l i r r g u a l a n d d i s l o f a c i a l D M e s i o i a c i a l a n d r r e s i o l i n g u a l E M e s i o f a c i a i a n d d i s t o l i r r g u a l 1 2 9 A t a g e B , th e m a x i l l a r y f i r s l n r o l a r h a s
A a mesial contacl witlr the prinrary first nrolar B a distal conlact with the second molar. C . n o m e s i a l c o n t a c t .
D no distal contact. E not yet erupted
1 3 0 . O f t h e p r i m a r y m a x i l l a r y t e e 1 h , t h e c e r v i c a l r i d g e w o u l d s t a n d o u t m o s l p r o n r i n e n t l y a s a d i s t i n c l entrty on which surface of which molar?
M o l a r Surface A First Distofacial B . F i r s t M e s i o f a c i a l C . S e c o n d D i s t o f a c i a l D . S e c o n d M e s i o l i n g u a l E . S e c o n d D i s t o l i n g u a l 1 3 1 . W h i c h g r o o v e o f t h e m a n d i b u l a r f i r s t m o l a r d o e s t h e m a x i l l a r y m e s i o l i n g u a l c u s p p a s s th r o u g h i n a l a t e r a l e x c u r s i v e m o v e m e n t o n t h e w o r k l n o s i d e ? A . B u c c a l B L i n g u a l C . C e n t r a l D Distobuccal 1 3 2 . W h i c h o f t h e f o l l o w i n g p r e m o l a r s f r e q u e r r t l y h a s o n l y o n e p u l p h o r n ? A Maxillary firsl B . l r 4 a n d i b u l a r f i r s t C . M a x i l l a r y s e c o n d D M a n d i b u l a r s e c o n d
133. Tl-re incisal enrbrasure is the snrallest betweerr which of the {ollowrrrg two teeth?
A . M a x i l l a r y c e n t r a l i n c i s o r s B M a n d i b u l a r c e n t r a l i r r c i s o r s C M a x i l l a r y c e n t r a i a n d la t e r a l i n c i s o r s D M a x i l l a r y l a t e r a l i r r c i s o r a n d c a n i n e E M a n d i b u l a r l a l e r a l i n c i s o r a n d c e n t r a l i n c i s o r 1 3 4 . V t / i " i e r r i n i t s n o r n r a l p o s i l i o r t r e l a i i v c 1 o t h e a r c h f o r n r . t h e c r o r v r r o f a n r a r r d i b u l a r r f i r s i n . r o l a r i r r c l i n e s A . d i s t a l l y a n d fa c i a l l y . B m e s i a l l y a n d fa c i a l l y . C . m e s i a l l y a n d ii n g u a l l y D d i s t a l l y a n d li n g u a l l y . 1 3 5 . W h i c h o f t h e fo l l o w i n g t e e t h m i g h l p o s s e s s t i r r e e c u s p s ?
A Maxillary second prenrolar and maxillary firsl m o l a r
B Maxiliary second premoiar ar'rd mandibular first premolar
C Maxillary firsl molar and mandibular second m o l a r D . M a x i l l a r y s e c o n d m o l a r a n d m a n d i b u l a r f i r s l premolar E . M a x i l l a r y s e c o n d m o l a r a n d m a n d l b u l a r second premolar 1 3 6 . E a c h o f t h e fo l l o w i n g g r o o v e s o r i g i n a t e s i n t h e central pit of the maxillary second molar (four cusp t y p e ) E X C E P T o n e . W h i c h o n e is t h e
E X C E P T I O N ? A . B u c c a l B. Central C . D i s t o l i n g u a i
D. Transverse grooves of obiique ridge 1 3 7 . W h e n th e m a n d i b l e m o v e s f r o m m a x i m u n r
intercuspal position distally, any iooth contacts that occur are called
A. retrusive contacts. B. protrusive contacts.
C. mediostrusive side conlacts. D. laterotrusive side contacts. E. lateral protrusive contacts.
138. Between which of the following perrnanent teeth is the lingual enrbrasure snraller tlran the facial enrbrasure?
A Maxiliary first prenrolar and nraxillary secorrd prentolar
B. Maxillary secorrd nrolar arrd maxillary third ntolar C . l t 4 a n d i b u l a r f i r s t n r o l a r a n d n r a n d i b u i a r secono llolar D . M a n d i b u l a r f i r s t p r e n r o l a r a n d m a n d i b u l a r second prenrolar
1 5
1 3 9 O n a m a n d i b u l a r f i r s l n r o l a r , l h e d i s l o f a c i a l g r o o v e s e r v e s a s a n . j s c a p e w a y f o r l l r e n r e s i o l i n g u a l c u s l t o l t i r e r r r a x j l l a r y { i r s 1 m o l a r d u r i n g w h i c h o { t h e f o l l o w i n g n r a n d i l t u l a r n r o v e n r e n l s ? A . W o r k i n g B N o n - w o r k i n g C P r o t r u s i v e D . C e n l r i c s i i d e 1 4 4 . W h i c h o f lhe {ollowirrg p r i m a r y g r o o v e s u n i t i n g i n t h e d i s l a l p i 1 o n t h e o c c l u s a l s u r l a c e o f i h e m a n d i b u l a r s e c o n d m o l a r re p r e s e n t s t h e o n e t h a l n o r m a l l y h a s n o c o u n l e r p a r l j n the distal pit of the firsl molar?
A . D i s t o l i n g u a l B D F t r i a n g u l a r C . D L t r i a n g u l a r D . D i s t a l m a r g i n a l
E. Distal portion of the central
141 . Which of the following best describes the cervical margin on the facjal crown surface of the maxillary flrst molar?
A Straight
B Evenly convex toward the apex C. Evenly convex toward the occlusal ? lrregulariy convex toward the apex E. lrregularly convex toward the occiusal 142. Which of the following represents the most
c o m m o n t y p e o f r o o l a n o m a l y o n t h e m a n d i b u J a r first premolar? A. Dwarfing B . E l o n g a t i o n C . B i f u r c a t i o n D. Concrescence E. Trifurcation
143. Which of the following teelh represents the one mosl likely to present with three roots?
A . M a n d i b u l a r c e n t r a l i n c i s o r B M a n d i b u t a r s e c o n d p r e m o l a r C M a n d i b u l a r c a n i n e
D. Maxillary first prenrolar E . M a x i l l a r y s e c o n d p r e n r o l a r
1 4 4 W i r i c h o i t h c . f o l l o w i n g r e p r e s e n l s t h e s l r u c l u r e i n t h e r r r a x i l l a r y a l v e r t l a r b o n e lh a l m a x i l l a r y p r r : m o l a r rools occasronally penelrale,1
A . A n t r u m B . N a s a l s e p l u n r C . F r o n l a l s r n u s D. Zygomalic arch E . M a n d i b u l a r f o s s a
145. Which of lhe foliowing javr positions is deternrined alnrosl exclusively by tooth contact?
A Resl position B. Terminal hinge C . M a x r m u m o p e n i n g D . M a x i m u m p r o l r u s i v e E . l n t e r c u s p a l p o s i t i o n
146. In a CUSP TO FOSSA conlacting relationship in intercuspal position, the maxillary first premolar is most likely to articulate with which of the following m a n d i b u l a r t e e t h ?
A . L a l e . a l i n c i s o r
B . L a t e r a l i n c i s o r a n d c a n i n e C. First premolar
D . C a n i n e a n d fi r s t p r e m o l a r
E. Firsl premolar and second premolar 147. Which of the following is least likeiy to contribute to
or affect stabiiity of the dental arch form? A. Periodontal health
B . P l a n e o f o c c l u s i o n C. Occlusal contacl forces D. Interproximal contact form
E. Forces exerted by the llps and tongue 148. When viewed from the fronial plane and
progressing posteriorly, the axial inclination of the crowns of maxiJlary poslerior teeth
A. renrains vertical. B . i n c l i n e s i i n g u a l l y . C . i n c l i n e s d i s t a l l y . D. inclines rnesially. E . i n c l i n e s b u c c a l l y .
149. When viewed from the sagiilal plane, the axial i n c l i n a t i o n o f t h e a n l e r i o r l e e t h A. remains vertical. B inclines facialiy. C. inclines nresially. D. inclines distally. E . i n c l i n e s l i n g u a l l y . t o
1 5 t l T . h e l t r e s e n c e o f n r a n r e l o n s o n a 1 9 , y e a r - o l c l p a l i c n t s u g g e s l s w h i c h o { ll r e lo i l o v , i i r i g c o n d i l i o n s . / A F lu o r o s i s B l r / l a l { o r n r a t r o r r C . M a l n u l r i t i o n D D e l a y e d e f u p t i o n E A n l e r i o r o p e n b i t e 1 5 1 I n o s t e o n r a l a c i a , b o n e s a r e w e a k b e c a u s e o i t h e f a i l u r e o { A r e m o d e l i n g o f b o n e . B . b o n e m a t r i x f o r m a t i o n . C. osteoblasl proliferation D . b o n e m a t r i x c a l c i f i c a t i o n . E. interstitial growth of carlilage. 1 5 2 . W h i c h o f t h e f o l i o w i n g i s t h e m o s t c o m m o n
l o c a t i o n f o r a n a t h e r o s c l e r o t i c i n d u c e d a n e u r y s m ? A. Thoracic aorta
B . A b d o m i n a l a o r t a C. Coronary arleries D. Arch of the aoda E. Common iliac arteries
153. Each of the following siatements about poliovirus infections is correct EXCEPT one. Whlch one rs t h e E X C E P T T O N ? A . M o s t in f e c t i o n s a r e s u b c l i n i c a l . B . P a r a l y s i s i s a n u n c o m m o n o u t c o m e o f infection. C . T h e r e a r e 3 t y p e s o f p o l i o v i r u s , m a k i n g 3 i n f e c t i o n s p o s s i b l e . D . V i r u s is p r e d o m i n a n t l y s h e d fr o m th e b o d y and transmitted in resplratory secretions. E . S o m e d a m a g e d n e u r o n s m a y b e r e p a i r e d ,
restoring lost functions,
1 5 4 . W h i c h o f t h e f o l l o w i r . r g c a n r e s u l t i f a n i r r d i v i d u a l lraving reactivation of latent varlcella zoster virus t r a n s n r i t s v i r u s t o a s e r o n e g a t i v e i n d i v i d u a l ? A . S h i n g l e s B C h i c k e r r p o x C l l e r p e s la b i a l i s D . l n f e c t i o u s m o n o n u c l e o s i s E . l l e r p e l i c g i n g i v o s t o n r a t i l i s ' 1 5 5 W h i c l r o f t h e { o l l o w i r r g c o n d i t i o n s m i g l r t b e a n i n i l i a l nrani{estation of early, acute lJlV infectiorr? A . K a p o s i ' s s a r c o m a B. Wasling syndronre C O r a l h a i r y le u k o p l a k i a D M o n o n u c l e o s i s - l i k e s y n d r o r n e F P r r e u m o c y s l i s c a r i n t i p n e u n r o n i a 1 5 6 . W h i c h o i t h e fo l l o w i n g f i a t h o g e n s i s l f r e s i n g l e rrtosl conrnron cause of sexually lransnritled d r s e a s e i n t h e U . S . ? A . T r e p o n e n r a p a l l i d u r n B H a e n r o p h i l u s d u c r e y i C Chlanrydia tracl'romatis D . H e r p e s s i m p l e x v i r u s E H u n r a r r i m m u n o d e f i c r e n c y v i r u s
157. Which of the {ollowrng represents the nrechanisrn o f a c t i o n o f d i p h t h e r i a l o x i n ? A. Actrvales cAMP B. Causes cytolysis C . i n h i b i t s t r a n s l a t i o n D. lnhibits transcription E . I n h i b i t s D N A re p l i c a t i o n 1 5 8 . E a c h o f t h e f o l l o w i n g f l u i d s i s c o n s i d e r e d o n e t h a t c a n t r a n s m i t H I V E X C E P T o n e . W h i c h o n e is t h e E X C E P T I O N ? A . S e m e n B . S e r u m C . S a l i v a tJ. Amniolic fluid E . B r e a s t m i l k
159. Which of the following represents the anaerobic organism thal is cultured from gingival scrapings a n d t h a t fo r m s b l a c k c o l o n i e s o n h e m i n - c o n t a i n i n g c u l t u r e m e d i a ? A . S a r c i n a l u t e a B . B a c i l l u s a n t h r a c i s C. Veillonella alcalescens D. Porphyromonas gingivalis E. Alpha-hemolylic streptococcus ' 1 6 0 . B e t a ' 1 - 4 l i n k a g e s c o n n e c t N - a c e t y l g l u c o s a m i n e and N-acetyl muranric acid. The resulling polynrer is {ound in bacterial A . f l a g e l l a . B . c a p s u l e s . C . c e l l w a l l s . D metachronratic granuies. ' 1 6 1 . R o u g h p n e u n t o c o c c i t h a l a r e g r o w n i n t h e presence of DNA fronr smooth pneunrococci develop cagtsules. This process is ternred A . l r a n s l a l i o n .
B . l r a r r s d u c l i o n C. transfornration. D . c o n j u g a t i o n .
1 6 2 D u r i n g a n o u t b r e a k o f g a s l r o e n l e r i l i s c a u s e d b y S a l n r o n e l l a , a s l r a i n o f t h e s p e c i e s s u d d e n l y a p p e a r s 1 o l. t c r e s i s t a n l t o s r : v e r a l a n t i l t j o l i c s . W h i c h o { l i r e fo l l o w i n g b e s t e x p l a i n s w h y ? A . P a r e n l s t r a i n l r a s u n d e r g o n e s e v e r a l m u l a l i o n s B P a r e n t s t r a i n h a s a c q u i r e d a p l a s n r i d . C There are several sltecies of Salmonella
p r e s e n t , e a c h r e s i s t a n l t o o n e a n t i b i o l i c . D . N e w s t r a i n i s a s p e c i e s o f E s c h e r i c h i a c o l i , w h i c h h a s a c q u i r e d v i r u l e n c e b y m u t a t i o n . 1 6 3 . W h j c h o { the following k a r y o l y p e s i s f o u n d in T u r n e r s y n d r o n r e ? A 4 5 , X O B . 4 5 , Y O C . 4 6 , X X D . 4 7 , X X Y E 4 7 , X Y Y
164. Which of the following viruses are freguenfly associated with eye infections?
A . M u m p s a n d m e a s l e s v i r u s e s B . P a r a i n f i u e n z a a n d r u b e l l a v i r u s e s C . C o x s a c k i e v i r u s a n d r h i n o v i r u s e s D . A d e n o v i r u s e s a n d r e o v i r u s e s E . H e r p e s s i m p l e x v i r u s a n d a d e n o v i r u s e s 1 6 5 . I n h u m a n s , t h e m u m p s v i r u s is transferred b y A . f o o d . B. feces. C . f l i e s . D . s a l i v a . 1 6 6 . H u n r a n l e u k o c y t e a n t i g e n ( H L A ) C l a s s i molecules are found on which of the following?
A A l l n u c l e a t e d c e l l s B . C D 4 + T c e l l s o n l y C . E p i t h e l i a l c e l l s o n l y D . H L A C l a s s ll + - c e l l s o n l y E M e s e n c h y n r a l c e l l s o n l y
167 . Sofl and hard tissue necrosts characterizes which o f t h e f o l l o w i n g i u r r g a l d i s e a s e s ? A . M u c o r n r y c o s i s B . C r y p t o c o c c o s r s C . H i s l o p l a s n r o s r s D C o c c i d i o i d o r l y c o s i s E . C a n d r d i a s i s 1 6 8 . N o n q o n o c o c c a l u r e t h r i l i s i s o l l e r r c a u s e o D y m i c r o o r g a n i s n r s o l w h i c h o f l h e f o l l o v y i r r g g e n e r a ? A . C h i a n r y d r a B . T r e p o n e n r a C N e i s s e r i a D Hertrophilus 1 6 9 W h i c h o f t h e following i s l e a s l Ii k e i y t o p r o d u c e a c u t e a b d o m i n a l s y m p t o n r s ? A C h o l e l i t h i a s i s B. Acule pancreatitis C Ampulla of Valer cancer
D Carcinoma of the lail of the pancreas 174 Which of the following represents the arthritis thal
i s u s u a l l y a s s o c i a t e d w i t h a g i n g ? A. Osieoarthriiis B. Gouty arthritis C. Rheumatoid arthrilis D. Psoriaiic arthritis 1 7 1 . M u l t i p l e , l y t i c l e s i o n s o f b o n e c h a r a c t e r i z e e a c h o { the following conditions EXCEpT one. Which is the E X C E P T I O N ? A . M u l t i p l e m y e l o m a B. Metaslatic carctnoma C. Osteogenesis imperfecta D. Hyperparathyroidism E . L a n g e r h a n s ( e o s i n o p h i l i c ) g r a n u l o m a t o s i s 172. Osleoporosis can be associated with each of the
f o l l o w i n g E X C E P T o n e . W h i c h is t h e E X C E p f I O N ? A . P r o l o n g e d c o r l i c o s t e r o i d a d m j n i s t r a t i o n B . P r o l o n g e d i m m o b i l i z a t i o n C . C h r o n i c m a l n u t r i t i o n D. Hypervitaminosis D E . A d v a n c e d a g e
173. In gelreral. enzynre-deficiency drseases are inheriled by which oi the following nrodes? A . P o l y g e n i c
B X - l i n k e d d o n r i n a n t C . A u i o s o n r a l r e c e s s i v e D . A u l o s o n r a l d o n r i n a n t
1 7 4 W h j c ; l - r o f t h r : fo l l o w i n g a r - i e n r i a s r e s u l l s l r o n r d r u g . ind uced l_role nta rrc;tr,r su1-ilrression?
A A l . , l a s l i c B S i c k l e c e r r C p c . r n i c i o u s D H e n r o i y t i c E [ 4 y e l o p h l l r i s i c 1 7 5 M u i t i p l e d r u g r e s i s l a n c e i s a s s o c i a l e d w t l l r A p l a s m i d s . B . r e c o n r b i n a t i o n . C . p o i n l mutations. D . s p e c i a l i z e d t r a n s d u c i n g p h a g e s . E . g e n e r a l i z e d t r a n s d u c i n g p t r a g e s 1 7 6 . W h i c h of the foilowing s l a t e m e n t s b e s t d e s c r i b e s bacterial transformation? A . D N A c o d i n g f o r R N A s y n t h e s i s B RNA coding for protein synthesis
C . A c q u i s i t i o n o f a n i n h e r i t a t l e t r a i t b y b a c t e r i a m e d i a t e d b y D N A
D. Acquisilion of an inheritabje trait by bacteria m e d i a t e d b y R N A
E . B i n d i n g o f 3 0 S a n d 7 0 S ribosomes 1 7 7 . P l a s m i d - m e d i a t e d a n t i b i o t i c r e s i s t a n c e
h a s b e e n observed in diseases caused by each ol the f o l l o w i n g E X C E P T o n e . W h i c h one is the E X C E P T I O N ? A. Streptococcus pyogenes B. Staphylococcus aureus C ly'eisseria gonorrhoeae D. Bordeteila pedussis E. Haentopltilus influenzae 1 7 8 . E a c h o f the following c a n p r o d u c e a g e n o r y p r c c h a n g e E X C E P T o n e . W h i c h is the f"XCEpTION? A . C o n j u g a t i o n B . L y s o g e n i z a t i o r r C. Transfornration D. Exposure to tetracycline
179. The hunran irnnrr_rnodeficiency virus preferentially iniects n,hich o{ thc following ceils?
A N K
B . H e l p e r T C Cytotoxic T D . S u p p r e s s o r T
180 Whicfr of lhe following vjruses js isolaled irc.rn.r feces?
A R u b e l l a B l t e p a t i t i s C C . l n f l u e n z a A D C o x s a c k i e v i r u s E . H e r p e s s i m p i e x m o s l li k e l y 1 o L r e 1 8 1 . C e l l u l a r l r o p i s n r b y v i r u s e s i s d e p e n d e n t o n w h j c h of the following?
A. Host cell DNA homoiogy to viral DNA B. Temperature of host cell incubaticln C. Gamma-interferon production D. Cell surface receptors E. Virai enzyme synthesis
182. A 5-year-oid child with vesicular lesions limiied 1o the palate and the posterior oropharyngeai mucosa h a s a n o r a i le m p e r a t u r e o f 1 0 1 o F ( 3 g o c ) T h e m o s t p r o b a b l e d i a g n o s i s i s
A. chickenpox. B . h e r p a n g i n a . C. recurrent oral herpes. D. herpetic gingivostomaiitis. E. hand-foot-and_mouth disease. 183. Which of the following cells are the most
radiosensitive? A, Neurons B, F ibroblasts C. Lymphocytes D. Chondrocyies E . E p j t h e l i a l c e l l s
184. During repail which of the following substances is essential for precollagen fibers to transform into collagen fibers? A. Corlisone B. Carotene C. Ascorbrc acid D . p r o t h r o m b i n E. Thronrboplastin
185. Which of the following conditions represenls an i n l o x i c a l i o n r a l h e r t h a n a n t n f e c l i o n ? A Anthrax B . B o t u l i s n r C. Cl.rancroid D. Bacleroidosis E. Salrrrorrellosis septicenria 1 A
1 8€t l - h e le n s i l e strenglh o l a l r e a l i n g n r u c o s a l w o u n d d e p e r r d s o r r w h r c h o f t h e f o l l o w i n g ? A . W o u n d h o r n r o n e s B E p i l h e l i a l r e g e n e r a t i o n C F o r n r a l i o n o f c o l i a g e n f i l t e r s D . A c t i v a t i o n o f f i b r r n o r y s r s E . F o r m a t i o n o f e l a s l i c f i b e r s T h e c h e m o t a c l i c a c c u m u j a l i o n o f i e u k o c y l e s a l t h e s r t e o l i m m u n e conrplex d e p o s i t i o n i s a r l s u l f o l A . s t e r o i d s . B h i s t a m i n e . C . c o m p l e m e n t . D a n t i h i s t a n r i n e s ,
1 8 8 . W h i c h of the following h a s th e l e a s l ability t o regenerate? n h A . b o n e B . L i v e r C . S t r i a t e d m u s c l e D . C o l l a g e n E . S m o o t h m u s c l e 1 8 9 . H e a l i n g i s r e t a r d e d b y e a c h o f the following c o n d i t i o n s E X C E P T o n e . W h i c h one is the E X C E P T I O N ? n -A . t r a u m a B . l m m o b i l i z a r r o n C . I n f e c t i o n D . H e m o r r h a g e E . l s c h e m i a 1 9 0 . E s c a p e o f p l a s m a f r o m c a p i l l a r i e s i n t o a n a r e a ot inflammation js favored by an increase in which of t h e f o l l o w i n g ? A H y a l u r o n i d a s e B Leukocyte mlgration 9 V a s c u l a r p e r m e a b i l i t y ? O s m o t i c p r e s s u r e o f p l a s m a E N u m b e r o f e n d o t h e l i a l j u n c t i o n s 1 9 1 . E a c h of the following c o n d j t i o n s p r e d i s p o s e s a p a t i e n t t o d e v e l o p c a r l c e r E X C E p T o n e . Which i s t h c E X C E p T I O N ? A . A s b e s t o s i s B . A n t h r a c o s i s C . l l e p a t i t i s C D. Gardner's syrrdrorne E. Ulcerative colrtis 1 9 3 M e l a s l a t i c c a l c i f i c a l i o n s a r e n r o s l li k e l y t o b e l h e r e s u l l o i A . g a l l s l o n e s . B alherosclerosis. C hypcrparathyroidisnr. D osleogenic sarcoma. E . i y r r r p h a t i c s p r e a d o I l u n g c a n c e r . Dlfficully in swailowing refers to
A . d y s p n e a . B a c h a i a s i a . C d y s p h a g i a . D . h e m e t e m e s i s .
194. Each of the following viruses is potentialty capable of causing cell transformation EXCEpT one. Whjch o n e i s t h e E X C E P T I O N ? A. Retrovirus B. Herpesvirus C. picornavirus D. Hepatitis B virus E . H u m a n p a p i l l o m a v i r u s
195. Which of the following terms refers to the presence of digested blood in the stool?
A. Hemosiderosrs B. Hemochromatosis C . H e m a t o m a D. lcterus E . M e l e n a 1 9 6 . C h l a m y d i a t r a c h o n r a t i s m i g h t c a u s e e a c h of the following djseases EXCEPT one. Which one rs the E X C E P T I O N ?
A. Trachoma
B. Lymphogranuloma venereunr C. lnclusion conjunctivitis D. Non-gonococcal urethritis E. Primary atypical pneumonia 197. Which of the following conditions is nrost
commonly associated with acute pancreatitis? A . C h r o n r c a l c o h o l a b u s e B Diabetes nreliitus C . p h y s i c a l t r a u m a D. Viral infection E. lly;rercalcenrra 1 0 4 187
2 0
1 9 8 E e r c h o i t h e f o l l o w i n g i s a l t r i b u t a b l e t o h e p a l i c ; { a i l u r e E X C E P T o n e . W h i c h o n e is t h e E X C E P T I O N ? A Tremor B G y n e c o m a s t i a C . M a l l o r y b o d i e s D . H y p o a l l . r u r n i r r e m i a E S p i d e r l e l a n g e c t a s r a 1 9 9 . R e d h e p a t i z a t i o n r e f e r s 1 o w h i c h o f t h e f o l l o w i n g ? A B C D E a r l y s t a g e o f a c u t e h e p a t i t i s Late stage of acute hepatitis
Cirrhosis caused by hemochromatosis C o n g e s t i o n o f t h e l i v e r c a u s e d b y c h r o n i c r i g h l s i d e d h e a d f a i l u r e S t a g e o f l o b a r p n e u m o n i a p a s s i v e c o n g e s t i o n o f l e n a c c o m p a n i e s o f t h e f o l l o w i n g ? E d e m a I n f l a m m a t i o n C o n t u s i o n H e m a t o m a E . 200 Acute w h i c h A . B . a D . z l
