Flashcards in Extrinsic forelimb muscles (medial) Deck (4)
M. pectoralis profundus (origin, insertion & action)?
ORIGIN - 1st to last sternebrae
INSERTION - Lesser & greater tubercle of humerus
ACTION - adducts & retracts the forelimb
M. pectoralis superficialis (origin, insertion & action)?
ORIGIN - 1st & 2nd sternebrae
INSERTION - whole crest of greater tubercle of humerus
ACTION - draw back limb inward, forward or back, and draw trunk sideward
M. serratus ventralis (origin, insertion & action)?
ORIGIN - 1. transverse processes of last 5 cervical vertebrae, 2. 1st 7 to 8 ribs
INSERTION - serrated face of scapula (sub scapular)
ACTION - support trunk & depress the scapula