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abductor pollicis longus (muscle)

 

Definition: outcropping muscle of posterior compartment of forearm; origin, interosseous membrane and posterior surfaces of radius and ulna; insertion, lateral side of base of first metacarpal bone; action, abducts and assists in extending thumb; nerve supply, radial.

Synonym(s): musculus abductor pollicis longusTA, long abductor muscle of thumb, musculus extensor ossis metacarpi pollicis

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.

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