Muscles acting at elbow joint
Elbow extensors
Innervation: radial nerve
Triceps brachii
Elbow flexors
(Anterior compartment of forearm)
Innervation: musculocutaneous nerve
| Muscle | Action | Origin | Insertion |
|---|---|---|---|
| Biceps brachii | Forearm flexion and supination | Long head - supraglenoid tubercle of scapula; short head-apex of coracoid process |
Tuberosity of radius |
| Brachialis | Forearm flexion | Anterior aspect of humerus (medial and lateral surfaces) and adjacent intermuscular septae | Tuberosity of ulna |
| Coracobrachialis | Arm flexion at glenohumeral joint, arm adduction | Coracoid process | Medial midshaft of humerus |