Origin: tip of coracoid process on scapula;
Insertion: middle of medial border of humerus, opposite deltoid tuberosity;
action: horizontal flexion and adduction of the humerus at the shoulder;
synergists:
pectoralis major,
biceps brachi, and anterior deltoid;
nerve supply: musculocutaneous,
C6,
C7;
- Surgical Hazards:
-
profunda gives off muscular branches, usually gives
rise to a nutrient artery that enters the humerus close to the insertion
of the
coracobrachialis;
