Origins and Insertions (Abductor Pollicis Longus)
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1. Abducts the 1st metacarpal 2. Radially deviates the wrist 3. assists to extend and rotate the thumb 4. Flexes the wrist
Action
Lateral aspect of base of 1st metacarpal (dorsal side)
Insertion
Radial C6,7,8
Nerve
1. Posterior surface of ulna and radius 2. Interosseous membrane
Origin