Origin

Anterior surface of the humerus, particularly the distal half of this bone

Insertion

Coronoid process and the tuberosity of the ulna

Action(s)

Flexion at elbow joint.

The brachialis is the strongest flexor of the elbow. Unlike the biceps, the brachialis does not insert on the radius, and therefore cannot participate in pronation/supination of the forearm.

Pronation/supination of the forearm does not affect its action.

Nerve Supply

Musculocutaneous nerve

Arterial Supply

Radial Recurrent Artery

Physical Exam

Enter physical examination maneuvers for muscle

Clinical Importance

Enter clinical importance of muscle

Disease States

Enter links to pages where muscle involved

Discussion

Occasionally doubled; additional slips to the supinator, pronator teres, biceps brachii, lacertus fibrosus, or radius are more rarely found.

Figures

Click thumbnail for larger image

Credits:

From Wikipedia:
Brachialis muscle

Attachments:


Brachialis.png (image/png)


brachialis1.png (image/png)