| Extensor carpi ulnaris | |
|---|---|
 Posterior surface of the forearm. Extensor carpi ulnaris labeled in purple at center right. | |
| Details | |
| Origin | Humeral head: Lateral epicondyle of the humerus. (???-->)Ulnar head: Olecranon, posterior surface of ulna, antebrachial fascia |
| Insertion | 5th metacarpal |
| Artery | Ulnar artery |
| Nerve | Posterior interosseous nerve |
| Actions | Extends and adducts the wrist |
| Antagonist | Flexor carpi radialis |
| Identifiers | |
| Latin | musculus extensor carpi ulnaris |
| TA98 | A04.6.02.045 |
| TA2 | 2507 |
| FMA | 38506 |
| Anatomical terms of muscle | |
In human anatomy, the extensor carpi ulnaris is a skeletal muscle located on the ulnar side of the forearm. The extensor carpi ulnaris acts to extend and adduct at the carpus/wrist from anatomical position.
Being an extensor muscle, extensor carpi ulnaris is located on the posterior side of the forearm.