Origins and Insertions (Extensor Pollicis Longus)
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1. Extends distal phalanx of thumb 2. Extends proximal phalanx of thumb 3. Assists to extend the wrist (if fingers are flexed)
Action
Distal Phalanx of Thumb
Insertion
Radial (C6,7,8)
Nerve
1. Posterior surface of ulna 2. Interosseous Membrane
Origin
