Chp 10-Forearm Extensors Flashcards
Forearm Extensors mm. (6)
- Ext. carpi radialis longus
- Ext. carpi radialis brevis
- ABductor pollicis longus
- Ext. carpi ulnaris
- Ext. digitorum
- Ext pollicis brevis & longus
Ext. carpi radialis longus - O =
O: lateral supracondylar ridge
Ext. carpi radialis longus - I =
I: metacarpal #2
Ext. carpi radialis longus - A =
A: extension w/ radial deviation
Ext. carpi radialis brevis - O =
O: lateral epicondyle
Ext. carpi radialis brevis - I =
I: metacarpal #2 & 3
Ext. carpi radialis brevis - A =
A: extension w/ radial deviation
ABductor pollicis longus - O =
O: posterior ulna, radius, interosseus membrane
ABductor pollicis longus - I =
I: metacarpal #1 & trapezium
ABductor pollicis longus - A =
A: ABduct thumb away from palm
Ext. carpi ulnaris - O =
O: lateral epicondyle
Ext. carpi ulnaris - I =
I: metacarpal #5
Ext. carpi ulnaris - A =
A: extend wrist
Ext. digitorum - O =
O: lateral epicondyle
Ext. digitorum - I =
I: digits (extension hood)
Ext. digitorum - A =
A: extend fingers
Ext. pollicis brevis & longus - O =
O: posterior radius, ulna & interosseus membrane
Ext. pollicis brevis & longus - I =
I: proximal thumb phalanx (brevis), distal thumb phalanx (longus)
Ext. pollicis brevis & longus - A =
A: extends thumb
