O: bases of 2nd and 3rd metacarpals I: Medial side of base of proximal phalanx of thumb A: Draws 1st metacarpal laterally to oppose thumb toward center of palm and rotates it medially WikipediaQuestions
O: I: Medial border of 5th metacarpal A: Draws 5th metacarpal anteriorly and rotates it, bringing little finger (5th digit) into opposition with thumb WikipediaQuestions
O: Flexor retinaculum, scaphoid and trapezium I: Lateral side of 1st metacarpal A: Draws 1st metacarpal laterally to oppose thumb toward center of palm and rotates it medially WikipediaQuestions
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25k 14 2m Adductor Pollicis Muscle - Origin & Function - Human Anatomy - Kenhub Aug 17, 2015 5y ago Adductor Pollicis
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