Muscles 40 - 44

Muscles 40 - 44 - Lateral portion- median nerve; medial...

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Muscles 40 - 44
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Abductor Pollicis Brevis Origin: Scaphoid tubercle Insertion: Base of proximal phalanx of thumb Action: Thumb abduction Innervation: Median nerve
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Opponens Pollicis Origin: Flexor retinaculum and trapezium Insertion: Lateral border of the 1 st metacarpal Action: Thumb opposition Innervation: Median nerve
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Flexor Pollicis Brevis Origin: Flexor retinaculum and trapezium Insertion: Base of proximal phalanx of thumb Action: Thumb MP joint flexion Innervation:
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Unformatted text preview: Lateral portion- median nerve; medial portion ulnar nerve Adductor Pollicis Origin: oblique head ant. surface of 2 nd and 3 rd mets.; transverse head ant. surface of 3 rd met. Insertion: Base of proximal phalanx of thumb Action: Adducts thumb Innervation: Ulnar nerve Palmaris Brevis Origin: Flexor retinaculum Insertion: Skin of the palm Action: Corrugates skin of palm Innervation: Ulnar nerve...
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Muscles 40 - 44 - Lateral portion- median nerve; medial...

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