forearm extensors

what are all extensors innervated by:

radial nerve
what are the extensors held in place by?

extensor retinaculum
brachioradialis
- o: lateral surface of humerus
- i: styloid process radius
- a: flex forearm at elbow
- inn: fradial nerve
extensor carpi radialis longus
- o: supracondylar ridge of humerus
- i: base of 2nd metacarpal
- a: extend and abduct hand at wrist
- inn: radial
extensor carpi radialis brevis
- o: lateral epicondyle of humerus
- i: base 3rd metacarpal
- a: extend and abduct hand at wrist
- inn: radial
extensor carpi ulnaris
- o: lateral epicondyle of humerus and posterior border ulna
- i: 5th metacarpal
- a: extend and adduct hand at wrist joint
- inn: radial
extensor digitorum
- o: lateral epicondyle humerus
- i: branch into 4 tendons of inseriton: middle and distal phalanges
- a: extend medial 4 fingers
- inn: radial
extensor digit minimi
- a: lateral epicondyle humerus
- i: extensor expansion 5th finger
- a: extend 5th finger
- inn: radial
Supinator
- o: lateral epicondyle humerus
- i: lateral surface radius
- a: supinate forearm
- inn: radial

Author

Naheer

54450

Card Set

forearm extensors

Description

forearm extensor muscles

Updated

2010-12-09T02:03:36Z

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