flexor pollicis longus (muscle)
Definition: muscle of deep layer of anterior (flexor) compartment of forearm; origin, anterior surface of middle third of radius; insertion, palmar aspect of distal phalanx of thumb; action, flexes thumb at interphalangeal joint; nerve supply, median (anterior interosseous).
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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.