RABBIT MUSCULAR SYSTEM
MUSCLE NAME ORIGIN INSERTION ACTION
Musles of the abdominal wall
External oblique Lumbodorsal fascia and posterior ribs
Extensive nuerosis passing thru the
linea alba
Constrictor of the abdomen Internal oblique Second sheet of
the lumbodorsal fascia, posterior ribs, and inguinal
ligament Linea alba by extensive aponeurosis Compressor of the abdomen Transverse
Rectus abdominis Anterior end of pubic symphysis
Sternum and costal cartilages
Retracts ribs and sternum and
compresses abdomen Epaxial muscles
Muscles of the chest
Pectoralis major Whole length of the sternum
Humerus Draws the arm toward the chest Pectoralis primus
(anterior end of pec. major)
Manubrium of the sternum
Pectoralis minor Manubrium Clavicle and spine of scapula
Draws arm and shoulder toward
the chest Muscles of the neck and throat
Special portion of the platysma (depressor conchae
posterior)
Sternohyoid Manubrium of the
sternum
Anterior horn of the hyoid
Draws the hyoid posteriorly or raises the sternum
Sternomastoid Ventral to the manubrium of the sternum Mastoid process of the skull
Singly turn the head, together depress the head
on the neck Cleidomastoid Mastoid region of
the skull Clavicle Elevates clavicle or turns the head Basioclavicularis Occipital bone
Clavodeltoid Clavicle Humerus Raises the
humerus Masseter Zygomatic arch
Outer surface of the posterior end
of the mandible
Closes the lower jaw (elavator of
the jaw) Digastric Occipital bone Ventral surface of Opens the jaw
the mandible
Mylohyoid Mandible Median ventral line and the hyoid
Raises the floor of the mouth and brings the hyoid
forward Sternothyroid Sternum Thyroid cartilage Pulls the larynx
posteriorly
Thyrohyoid Raises the larynx
Muscles of the upper back and shoulder and back of the neck
Lattisimus dorsi Lumbodorsal fascia and posterior ribs
Crest on the medial side of the
humerus
Draws the arm caudad and
dorsad
Anterior trapezius
External occipital protuberance of
the skull and ligament in the middorsal line Metacromion process and nearby muscles and fascia
Draws the scapula and limb upward
and forward
Posterior trapezius
Lumbodorsal fascia and the neural
spines of the thoracic vertebrae
Spine of the scapula
Draws the scapula dorsally Levator scapulae
ventralis or major
Metacromion process
Pulls the scapula anteriorly
Rhomboideus
Middorsal ligament of the neck and succeeding neural spines Vertebral border of the scapula Draws scapula toward vertebral column Splenius Middorsal line of neck and adjacent
fascia
Occipital region of the skull and atlas
Singly turns the head, together
raise the head Supraspinatus Supraspinous fossa Greater tuberosity
of the humerus
Extends the humerus Deltoids (3):
2nd deltoid Acromion process
Humerus Raises the
humerus 3rd deltoid
Fascia of the muscle filling the infraspinous fossa Infraspinatus Infraspinous fossa
and spine Greater tuberosity of the humerus Extends the humerus Teres major
Dorsal half of the axillary border of
the scapula
Humerus
Draws humerus against body and
rotates it Teres minor
Ventral half of the axillary border of
the scapula
Greater tuberosity of the humerus Rhomboideus
capitis (or levator scapulae minor)
Side of the skull above the tympanic bulla Posterior end of the vertebral border on the Draws scapula craniad and
medial side rotates it Subscapularis Medial surface of
the scapula
Lesser tuberosity of the humerus
Pulls the humerus toward the median
ventral line Serratus ventralis Anterior -transverse processes of the cervical vertebrae Posterior - seven slips from the ribs
Vertebral border of the scapula above
the subscapularis
Draws scapula forward, backward, or against the body
Scalenes Raise the ribs and
bend the neck Serratus dorsalis Tendon from the
median dorsal line Ribs*
Raises the ribs craniad External intercostal Posterior margins of the vertebral ribs Anterior margins of the succeeding vertebral ribs
Pulls the ribs forward Internal intercostal Margins of the vertebral and sternal ribs Lower the ribs
Epaxial muscles of the thorax
The muscles of the upper arm Triceps brachii (3
heads): Long head
Scapula, from the axillary border
Olecranon Great extensors of the forearm Lateral head Greater tuberosity
of the humerus Medial head Dorsal surface of
the humerus Epitrochlearis or
extensor antibrachii
Fascia on the lower part of the medial surface of the long head of the triceps Biceps brachii Glenoid fossa
Radius and ulna Flexor of the forearm Brachialis
Ventral and lateral surface of the
humerus
The muscles of the thigh
Tensor fasciae latae Ilium In the fascia Tightens the fascia Biceps femoris (2 heads): Smaller anterior head Neural spines of adjacent vertebrate By a tendon on the knee-cap and on
the fascia of the shank
Abductor of the thigh and flexor of
the shank Larger posterior
head Ischial tuberosity
sacrum and part of the ilium Gluteus medius Crest and anterior
part of the ilium Greater trochanter
Vastus lateralis Greater trochanter dorsal to the insertion of the gluteus medius Vastus intermedius Greater trochanter and surface of the
femur
Rectus femoris
Ilium and the fascia lata and is
fused with the fibers of the tensor
fasciae latae
Vastus medialis Femur
Tibia and the patella and the
tendon which extends over the
patella
Powerful extension of the shank
Sartorius Inguinal ligament Tibia
Adductor of the thigh, rotator of the thigh, extensor
of the shank
Gracilis Pubic symphysis
Fascia of the distal portion of the thigh
and proximal portion of the shank Adductor of the leg Adductor longus (anterior muscle) and adductor magnus (posterior muscle)
Various parts of the
ischium Femur
Adductor of the thigh
Semitendinosus Ischial tuberosity Medial condyle of the tibia
Flexor of the shank Semimembranosus
Fascia over the biceps and ischial
tuberosity
Gracilis in the fascia of the shank
Tibialis anterior
Lateral condyle and tuberosity of
the tibia
Second metatarsal
Flexor of the foot Peroneus Tibia and fibula Metatarsals
Gastrocnemius
Lateral and medial condyles of the femur and tibia
Tendon of Achilles Extensor of the foot Soleus Head of the fibula
