| 释义 |
abductor pollicis longus (muscle) ab·duc·tor pol·li·cis lon·gus (mus·cle) [TA] 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 longus [TA], long abductor muscle of thumb, musculus extensor ossis metacarpi pollicis |