abductor pollicis brevis (muscle)
Definition: superficial thenar muscle origin, tubercle of trapezium and flexor retinaculum; insertion, lateral side of proximal phalanx of thumb; action, abducts thumb; nerve supply, median.
Synonym(s): musculus abductor pollicis brevisTA, short abductor muscle of thumb
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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.