MUSCLE ORIGIN INSERTION ACTION

MYLOHYOID mandible (tendon in) median line

elevates floor of the mouth & depresses

mandibleGENIOHYOID mandible median line elevates mouth &

depresses mandible

HYOGLOSSUS hyoid tongue retracts tongue forward

STERNORADIALIS sternum radio-ulna draws arm towards the chest

ANTERIOR PECTORALIS coracoid humerus adducts, flexes, rotates

forelimb medially

MIDDLE PECTORALIS coracoid humerus adducts, flexes, rotates forelimb medially

POSTERIOR PECTORALIS

lateral aponeurosis of rectus abdominis humerus adducts, flexes, rotates

forelimb medially

CUTANEOUS PECTORALIS

aponeurosis of rectus abdominis & xiphisternum

(near the) sternum adducts humerus; tenses skin of cranial abdomen

RECTUS ABDOMINIS pubis sternum compresses abdomen & flexes vertebral column

EXTERNAL OBLIQUE scapula & spinous process of vertebrae

xiphisternum & linea alba

(constricts &) compreses abdomen

INTERNAL OBLIQUE ilium & vetebrae xiphisternum & linea alba

aids external oblique & aids in respiration

DELTOID episternum, sternum, clavicle humerus abducts forearm

TRICEPS BRACHII humerus ulna (side of radio-ulna) extends forearm & elbow

EXTENSOR DIGITORUM COMMUNIS

humerus digits 2,4,5 extends digits & hand

EXTENSOR CARPI ULNARIS humerus (dorsal side of) wrist &

digits extends digits & hand

FLEXOR CARPI ULNARIS

(epicondyle of) humerus & head of

ulna5th metacarpal base flexes wrist & hand

EXTENSOR CARPI RADIALIS humerus (dorsal side of) wrist &

digits extends digits & hand

FLEXOR CARPI RADIALIS

(epicondyle of) humerus

2nd & 3rd metacarpal base

flexes wrist & abducts hand

MASSETER squamosal mandible elevates mandible

PTERYGOIDEUS pterygoid (medial side of condyle of) mandible assists jaw movement

DEPRESSOR MANDIBULARIS fronto-parietal mandible depresses mandible

TEMPORALIS squamosal & pterygoid mandible elevates mandible

LATISIMUS DORSI cranial end of dorsal fascia humerus

swings forearm upward & outward; rotates

forelimbCOCCYGEO-ILIACUS urostyle ilium supports articulation of

coccyx with ilium

ILIO-LUMBARIS sacrum & ilium along diapophyses of middle vertebrae

flexes & extends vertebral column

LONGISSIMUS DORSI urostyle base of skull extends trunk & elevates head

DORSALIS SCAPULAE scapula humerus extends forelimb

TRICEPS FEMORIS pelvic girdle tibio-fibula flexes & adducts thigh

SEMIMEMBRANOSUS iscium & pubis tibio-fibula extends thigh & flexes shank

BICEPS FEMORIS ilium tibio-fibula & femur extends & adducts thigh; flexes shank

SARTORIUS pubis tibio-fibula flexes thigh & shank

ADDUCTOR LONGUS pubis femur adducts thigh & leg

ADDUCTOR MAGNUS ischium & pubis femur adducts thigh & leg

GRACILIS MAJOR pubis tibio-fibula flexes shank & extends thigh

SEMITENDINOSUS ischium tibio-fibula extends & adducts thigh; flexes leg & knee

GRACILIS MINOR tibio-fibula tibio-fibula flexes shank & extends thigh

GLUTEUS ilium femur rotates thigh

PYRIFORMIS urostyle femur extends & rotates thigh

GASTROCNEMIUS femur Achilles tendon flexes shank & foot

TIBIALIS POSTICUS tibio-fibula tarsal bones flexes foot & rotates ankle

EXTENSOR CRURIS femur tibio-fibula extends shank

TIBIALIS ANTICUS femur tarsal bones lifts foot & flexes ankle

PERONEUS femur (distal end of) tibio-fibula

extends shank; extends & twists foot