Updated: 2/12/2018

Opponens Pollicis

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Origin Flexor retinaculum and tubercles of scaphoid and trapezium
Insertion Lateral side of 1st metacarpal
Action Draws 1st metacarpal laterally to oppose thumb toward center of palm and rotates it medially
Innervation Recurrent branch of median nerve (C8 and T1) (C8, T1)
Arterial Supply Superficial palmar branch of the radial artery

 

 

 

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