click below
click below
Normal Size Small Size show me how
Muscles of upper arm
| Term | Definition |
|---|---|
| biceps brachii | origins: short head-coracoid process (scapula), long head-supraglenoid tubercle (scapula) insertions: radial tuberosity (radius) actions: flexes shoulder and elbow, supinates forearm nerve: musculocutaneous (anterolateral forearm) |
| brachialis | origins: anterior shaft of humerus insertions: coronoid process of ulna actions: flexes elbow nerve: musculocutaneous (anterolateral forearm) |
| coracobrachialis | origins: coracoid process of scapula insertions: anterior shaft of humerus actions: flexes shoulder nerve: musculocutaneous (anterolateral forearm) |
| triceps brachii | origins: long:-infraglenoid tubercle(scapula). lat/med-posterior shaft of humerus insertions: olecranon process of ulna actions: extends shoulder and elbow nerve: radial (posterior surface of arm and forearm, posterolateral surface of the hand) |