Serratus anterior muscle
From Freepedia
Serratus anterior muscle is the surface of upper 9 ribs at side of chest - anterior aspect along entire length of medial border of scapula - (protraction) draws medial border of scapula away from vertebrae (upward rotation).
Funtion: pulls scapula forward. Originates from upper outer surface of ribs 1-8; inserts into the coracoid process of the scapula.



