Extensor Pollicis Longus
Extends thumb (metacarpophalangeal and interphalangeal). Located in the upper limb.
- Actions
- extends thumb (metacarpophalangeal and interphalangeal)
- Origin
- ulna, interosseous membrane of forearm
- Insertion
- distal phalanx of thumb
- Innervation
- posterior interosseous nerve (C7, C8)
- Blood supply
- posterior interosseous artery
Antagonists Flexor Pollicis LongusFlexor Pollicis Brevis