flexor pollicis brevis
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Origin
- superficial head: flexor retinaculum of wrist
- deep head: ulnar side of 1st metacarpal
Insertion
base of proximal phalanx of thumb
Action
flexes proximal phalanx of thumb
Innervation
- superficial head: median nerve
- deep head: deep branch of ulnar nerve
More general terms
References
- ↑ Stedman's Medical Dictionary 26th ed, Williams & Wilkins, Baltimore, 1995