serratus anterior Flashcards
1
Q
origin
A
external lateral surfaces of ribs 1-8 / 1-9
2
Q
insertion
A
anterior surface of medial border of the scapula
3
Q
innervation
A
long thoracic nerve
4
Q
action
A
- fixes scapula against the thoracic wall
- assists in lateral rotation of the scapula - allowing arm to be raised above 90º
