EWH Extensors Flashcards
1
Q
Brachioradialis
A
O:
- lateral supracondylar ridge of humerus
- intermuscular septum
I: styloid process of radius
N: radial N (C5, C6)
F: acessory flexor of elbow joint when forearm is midpronated
2
Q
Extensor carpi radialis longus
A
O: - lateral supracondylar ridge of the humerus - intermuscular seputum I: base of MC II N: radial N (C6, C7) F: extends/ radially deviates wrist
3
Q
Extensor carpi radialis brevis
A
O: - lateral epicondyle of humerus - intermuscular septum I: base of MC II & III N: deep branch of radial N (C7, C8) F: extends/ radially deviates wrist
4
Q
Extensor digitorum
A
O: - lateral epicondyle of humerus - intermuscule septum I: dorsal digital expansion of digits 2-5 N: posterior interosseous N (C7, C8) F: extends digits 2-5; extends wrist
5
Q
Extensor digiti minimi
A
O: - lateral epicondyle of humerus - intermuscular septum I: extensor hood of 5th digit N: posterior interosseous N (C7, C8) F: extends 5th digit
6
Q
Extensor carpi ulnaris
A
O: - lateral epicondyle of humerus - posterior border of ulna I: base of MC V N: posterior interosseous N (C7, C8) F: extends/ ulnarly deviates wrist
7
Q
Supinator
A
O: - lateral epicondyle of humerus - radial collateral and anular ligaments - ulna I: radius N: posterior interosseous N (C6, C7) F: supination
8
Q
Extensor indicis
A
O:
- posterior ulna
- interosseous membrane
I: extensor hood of index finger
N: posterior interosseous N (C7, C8)
F: extends digit 2 ("index" finger)
9
Q
ABDuctor pollicis longus
A
O: - posterior ulna and radius - interosseous membrane I: base of MC I N: posterior interosseous N (C7, C8) F: - ABD carpometacarpal (CMC) joint of thumb - accessory thumb extensor
10
Q
Extensor pollicis longus
A
O: - posterior ulna - interosseous membrane I: base of distal phalanx of thumb N: posterior interosseous N (C7, C8) F: extends interphalangeal (IP) joint of thumb; can also extend CMC and MCP joint of thumb
