Anatomy

Question 1

Extrinsic Extensor Muscles of the Hand (9)

Answer 1

1. Extensor pollicis brevis
2. Extensor pollicis longus
3. Extensor digitorum communis
4. Extensor digiti quinit proprius
5. Extensor carpi radialis longus and brevis
6. Extensor carpi ulnaris
7. First dorsal interosseous
8. Extensor indicis proprius
9. Abductor pollicis longus

Question 2

Flexion of the MCP joint lengthens which group of muscles?

Answer 2

Extrinsic extensors of the hand
* Extensor digitorum communis & extensor digiti minimi extend MCP & flex PIP + DIP joints