Muscles of the hand 0.0 / 5 ? MedicineanatomyUniversityNone Created by: nishadiprarthanaCreated on: 19-02-19 07:38 Innervation of thenar muscles N. medianus 1 of 37 Origin of m. opponens pollicis Tubercle of trapezium + associated flexor retinaculum 2 of 37 Insertion of m. opponens pollicis Lateral margin of metacarpal of thumb 3 of 37 Actions of m. opponens pollicis Opposes thumb - medial rotation + flexion of metacarpal on trapezium 4 of 37 Origin of m. abductor pollicis brevis Tubercles of scaphoid + trapezium + associated flexor retinaculum 5 of 37 Insertion of m. abductor pollicis brevis Lateral side of proximal phalanx of thumb 6 of 37 Actions of m. abductor pollicis brevis Abduction of thumb 7 of 37 Origin of m. flexor pollicis brevis Tubercle of trapezium + associated flexor retinaculum 8 of 37 Insertion of m. flexor pollicis brevis Base of proximal phalanx of thumb 9 of 37 Actions of m. flexor pollicis brevis Flexion at MCP joint of thumb 10 of 37 Innervation of deep head of m. flexor pollicis brevis Deep branch of N. ulnaris 11 of 37 Innervation of hypothenar muscles N. ulnaris 12 of 37 Origin of m. opponens digiti minimi Hook of hamate + associated flexor retinaculum 13 of 37 Insertion of m. opponens digiti minimi Medial margin of metacarpal V 14 of 37 Actions of m. opponens digiti minimi Rotation of metacarpal of little finger towards palm (opposition) 15 of 37 Origin of m. abductor digiti minimi Pisiform + tendon of m. flexor carpi ulnaris 16 of 37 Insertion of m. abductor digiti minimi Base of proximal phalanx of little finger 17 of 37 Actions of m. abductor digiti minimi Abduction of little finger 18 of 37 Origin of m. flexor digiti minimi brevis Hook of hamate + adj. flexor retinaculum 19 of 37 Insertion of m. flexor digiti minimi brevis Flexion of MCP joint of little finger 20 of 37 Purpose of lumbrical muscles Links extensor tendons to the flexor tendons 21 of 37 Origin of each lumbrical Tendon of flexor digitorum profundus - wraps dorsally + laterally around each finger 22 of 37 Insertion of each lumbrical Extensor hood 23 of 37 Actions of lumbricals Flexion at MCP joint, extension at IP joint 24 of 37 Innervation of lumbricals 2 + 3 = n. medianus, 4 + 5 = n. ulnaris 25 of 37 Innervation of interossei muscles N. ulnaris 26 of 37 Origin of interossei muscles Lateral + medial surfaces of metacarpals 27 of 37 Insertion of interossei muscles Extensor hood + proximal phalanx of each finger 28 of 37 Actions of interossei muscles Abduction at MCP joint 29 of 37 Origin of m. palmaris brevis Palmar aponeurosis + flexor retinaculum 30 of 37 Insertion of m. palmaris brevis Dermis of skin on medial margin of hand 31 of 37 Actions of m. palmaris brevis Wrinkles skin of hypothenar eminence + creates deeper curve of the hand 32 of 37 Innervation of m. palmaris brevis N. ulnaris 33 of 37 Origin of m. adductor pollicis One head: metacarpal 3, Other head: capitate + adj. areas of metacarpals 2 + 3 34 of 37 Insertion of m. adductor pollicis Base of proximal phalanx of thumb 35 of 37 Actions of m. adductor pollicis Adduction of thumb 36 of 37 Innervation of m. adductor pollicis N. ulnaris 37 of 37
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