Hand muscles
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| Flexor Digitorum Superficialis orgin | Common Flexor tendon, coronoid process, and radius
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| Flexor Digitorum Superficialis insert | Sides of the middle phalanx of th four fingers
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| Flexor Digitorum Action | Flexes the MCP and PIP joints of the fingers
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| Flexor digitorum nerve | Median nerve (C7,C8,T1)
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| Flexor digitorum profundus orgin | upper three fourths of the ulna
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| Flexor digitorum profundus insertion | distal phalanx of the four phalanges
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| Flexor digitorum profundus action | flexes all three joints of the fingers
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| Flexor digitorum profundus nerve | median and ulnar nerves (C8, T1)
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| Extensor digitorum muscle orgin | lateral epicondyle of the humerus
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| extensor digitorum muscle insertion | base of disal phalanx of the second throught fifth fingers
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| extensor digitorum muscle action | extends all three joints of the fingers
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| extensor digitorum muscle nerve | radial nerve (c6, c7, c8)
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| Extensor indicis muscle orgin | Distal ulna
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| extensor indicis muscle insertion | base of distal phalanx of the second finger
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| extensor indicis action | extends all three joints of the second finger
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| extensor indicis muscle nerve | radial nerve (c6, c7, c8)
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| extensor digiti minimi muscle | lateral epicondyle of humerus
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| extensor digiti minimi insertion | base of distal phalanx fifth finger
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| extensor digiti minimi action | extends all three joints of fifth finger
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| extensor digiti minimi nerve | radial nerve (c6, c7, c8)
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| flexor pollicis longus muscle orgin | radius, anterior surface
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| flexor pollicis longus muscle insertion | distal phalanx of thumb
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| flexor pollicis longus muscle action | flexes all three joints of the thumb
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| flexor pollicis longus muscle nerve | median nerve (c8, t1)
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| abductor pollicis longus orgin | posterior radius, interosseous membrane, middle ulna
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| abductor pollicis longus muscle insertion | base of the first metacarpal
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| abductor pollicis longus muscle action | abducts thumb
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| abductor pollicis longus muscle nerve | radial nerve
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| extensor pollicis brevis muscle orgin | posterior distal radius
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| extensor pollicis brevis muscle insertion | base of the proximal phalanx of thumb
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| extensor pollicis longus muscle orgin | middle posterior ulna and interosseous membrane
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| extensor pollicis longus muscle insertion | base of distal phalanx of thumb
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| extensor pollicis longus muscle action | extends all three joints of the thumb
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| extensor pollicis longus muscle nerve | radial nerve (c6, c7, c8)
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| flexor pollicis brevis muscle orgin | trapezium and flexor retinaculum
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| flexor pollicis brevis muscle insertion | proximal phalanx
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| flexor pollicis brevis muscle nerve | median nerve (c6, c7)
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| abductor pollicis brevis muscle orgin | scaphoid, trapezium and flexor retinaculum
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| abductor pollicis brevis muscle insertion | proximal phalanx
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| abductor prollicis brevis muscle action | abducts the thumb (CMC joint)
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| abductor pollicis brevis muscle nerve | median nerve (c6, c7)
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| opponens pollicis muscle orgin | trapezium and flexor retinaculum
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| opponens pollicis muscle insertion | first metacarpal
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| opponens pollicis muscle action | opposes the thumb (CMC joint)
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| opponens pollicis muscle nerve | median nerve (c6, c7)
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| abductor pollicis muscle orgin | capitate, base of the second metacarpal, palmar surface of the third metacarpal
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| flexor digiti minimi muscle | hamate and flexor retinaculum
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| flexor digiti minimi muscle insertion | base of proximal phalancx 5th finger
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| flexor digiti minimi muscle action | flexes cmc and mcp joints of the fifth finger
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| flexor digiti minimi muscle nerve | ulnar nerve (c8, t1)
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| abductor digiti minimi muscle orgin | pisiform and tendon of flexor carpi ulnaris
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| abductor digiti minimi muscle insertion | proximal phalanx of fifth finger
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| abductor digiti minimi muscle action | abducts the mcp joint of the fifth finger
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| abductor digiti minimi muscle nerve | ulnar nerve (c8, t1)
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| opponens digiti minimi muscle orgin | hamate and flexor retinaculum
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| opponens digiti minimi muscle insertion | opposes the fifth finger (cmc joint)
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| oponens digiti minimi muscle nerve | ulnar nerve (c8, t1)
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| doral interossei | adjacent metacarpals
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| dorsal interossei insertion | base of proximal phalanx
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| dorsal interossei action | abduct fingers at mcp joint
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| dorsal interossei nerve | ulnar nerve c8, t1
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| palmar interossei muscles orgin | respective metacarpal
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| palmar interossei muscle insertion | base of respective proximal phalanx
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| palmar interossei muscle action | abduct fingers at mcp joint
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| palmar interossei muscles nerve | ulnar nerve c8, t1
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| lumbrical muscle orgin | tendon of the flexor digitorum profundus muscle
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| lumbrical muscle insertion | tendon of the extensor digitorum
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| lumbrical muscle action | flesex the mcp joint while extendig the pip and dip joints
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| lumbrical muscles nerve | first and second lumbricales: median nervethird and fourth lumbricales: ulnar verve (c6, c7, c8)
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| grasps | power grip, cylindrical grip, precision grip, cylindrical grip variaion, spherical grip, pinch grip, hook grip, three-jaw chuck grip,pad to side grip and lumbrical grip, side to side grip
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