muscles of the arm
brachialis: origin & insertion
anterior surface of the distal humerus; coronoid process of ulna
coracobrachialis: origin & insertion
coracoid process; mid shaft of humerus (usually kind of torn up in donors)
triceps brachii: action
extends shoulder, extends elbow
brachialis: action
flexes elbow
coracobrachialis: action
flexes shoulder
biceps brachii: action
flexes shoulder, flexes elbow, supinates forearm
triceps brachii: origin
long head: infraglenoid tubercle; lateral head: posterior shaft of humerus; medial head: posterior shaft of humerus
biceps brachii: nerve supply
musculocutaneous
brachialis: nerve supply
musculocutaneous
coracobrachialis: nerve supply
musculocutaneous
triceps brachii: insertion
olecranon process
triceps brachii: nerve supply
radial
biceps brachii: insertion
radial tuberosity
biceps brachii: origin
short head: coracoid process; long head: supraglenoid tubercle of scapula