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abductor pollicis brevis
Superficial thenar muscle.
Origin: tubercle of trapezium & flexor retinaculum
Insertion: lateral side of the proximal phalanx of the thumb
Action: abducts thumb
Innervation: median nerve
General
skeletal muscle (voluntary muscle)
References
Stedman's Medical Dictionary 27th ed, Williams &
Wilkins, Baltimore, 1999
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