“extensor pollicis”

The following 2 entries include the term extensor pollicis.

extensor pollicis brevis

noun

: a muscle that arises from the dorsal surface of the radius, extends the first phalanx of the thumb, and adducts the hand

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extensor pollicis longus

noun

: a muscle that arises dorsolaterally from the middle part of the ulna, extends the second phalanx of the thumb, and abducts the hand

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