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Kinesiology > Chapter 7 Wrist and Hand Joint Extrinsic Muscles > Flashcards

Chapter 7 Wrist and Hand Joint Extrinsic Muscles Flashcards

1
Q

Flexor Carpi Radialis O&I

A

origin: medial epicondyle of humerus
insertion: base of 2nd and 3rd metacarpals on palmar surface

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2
Q

Flexor Carpi Radialis Action

A

flexion of wrist, abduction of wrist, weak flexion of elbow, weak pronation of forearm

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3
Q

Flexor Carpi Radialis Innervation

A

median nerve (C6, C7)

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4
Q

Palmaris Longus O&I

A

origin: medial epicondyle of humerus
insertion: palmar aponeurosis of the 2nd, 3rd, 4th, 5th, metacarpals

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5
Q

Palmaris Longus Action

A

flexion of the wrist, weak flexion of the elbow

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6
Q

Palmaris Longus Innervation

A

median nerve (C6, C7)

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7
Q

Flexor Carpi Ulnaris O&I

A

origin: medial epicondyle of humerus and posterior aspect of proximal ulna
insertion: base of 5th metacarpal (palmar surface), pisiform, and hamate

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8
Q

Flexor Carpi Ulnaris Action

A

flexion of wrist, adduction of wrist, weak flexion of the elbow

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9
Q

Flexor Carpi Ulnaris Innervation

A

ulnar nerve (C8, T1)

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10
Q

Flexor Digitorum Superficialis O&I

A

origin: medial epicondyle of humerus
ulnar head: medial coronoid process
radial head: upper 2/3 of anterior border of the radius just distal to the radial tuberosity
insertion: each tendon splits and attaches to the sides of the middle phalanx of the four fingers on the palmar surface

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11
Q

Flexor Digitorum Superficialis Action

A

flexion of the fingers at the metacarpophalangeal and proximal interphalangeal joints, flexion of the wrist, weak flexion of the elbow

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12
Q

Flexor Digitorum Superficialis Innervation

A

median nerve (C7, C8, T1)

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13
Q

Flexor Digitorum Profundus O&I

A

origin: proximal 3/4 of anterior and medial ulna
insertion: base of distal phalanges of four fingers

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14
Q

Flexor Digitorum Profundus Action

A

flexion of the four fingers at the metacarpophalageal, proximal interphalangeal, and distal interphalangeal joints, flexion of wrist

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15
Q

Flexor Digitorum Profundus Innervation

A

median nerve (C8, T1) to 2nd and 3rd fingers , ulnar nerve (C8, T1) to 4th and 5th fingers

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16
Q

Flexor Pollicis Longus O&I

A

origin: middle anterior surface of the radius and anterior medial border of the ulna just distal to the coronoid process
insertion: base of distal phalanx of thumb on palmar surface

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17
Q

Flexor Pollicis Longus Action

A

flexion of the thumb carpometacarpal, metacarpophalangeal, and interphalangeal joints, flexion of wrist, abduction of wrist

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18
Q

Flexor Pollicis Longus Innervation

A

median nerve palmar interosseous branch (C8, T1)

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19
Q

Extensor Carpi Ulnaris O&I

A

origin: lateral epicondyle of humerus and middle 1/2 of the posterior border of the ulna
insertion: base of 5th metacarpal on dorsal surface

20
Q

Extensor Carpi Ulnaris Action

A

extension of wrist, adduction of wrist, weak extension of elbow

21
Q

Extensor Carpi Ulnaris Innervation

A

radial nerve (C6, C7, C8)

22
Q

Extensor Carpi Radialis Brevis O&I

A

origin: lateral epicondyle of humerus
insertion: base of 3rd metacarpal on dorsal surface

23
Q

Extensor Carpi Radialis Brevis Action

A

extension of wrist, abduction of wrist, weak flexion of elbow

24
Q

Extensor Carpi Radialis Brevis Innervation

A

radial nerve (C6, C7)

25
Q

Extensor Carpi Radialis Longus O&I

A

origin: distal third of the lateral supracondylar ridge of humerus and lateral epicondyle of the humerus
insertion: base of 2nd metacarpal on dorsal surface

26
Q

Extensor Carpi Radialis Longus Action

A

extension of wrist, abduction of wrist, weak flexion of elbow, weak pronation

27
Q

Extensor Carpi Radialis Longus Innervation

A

radial nerve (C6, C7)

28
Q

Extensor Digitorum O&I

A

origin: lateral epicondyle of humerus
insertion: four tendons to bases of middle and distal phalanxes of four fingers on dorsal surface

29
Q

Extensor Digitorum Action

A

extension of the 2nd, 3rd, 4th, and 5th phalanges at the metacarophalangeal joints, extension of wrist, weak extension of elbow

30
Q

Extensor Digitorum Innervation

A

radial nerve (C6, C7, C8)

31
Q

Extensor Indicis O&I

A

origin: middle to distal 1/3 of posterior ulna
insertion: base of the middle and distal phalanxes of the 2nd phalange on dorsal surface

32
Q

Extensor Indicis Action

A

extension of the index finger at the MCP joint, weak wrist extension, weak supination

33
Q

Extensor Indicis Innervation

A

radial nerve (C6, C7, C8)

34
Q

Extensor Digiti Minimi O&I

A

origin: lateral epicondyle of humerus
insertion: base of the middle and distal phalanxes of the 5th phalange on dorsal surface

35
Q

Extensor Digiti Minimi Action

A

extension of the little finger at the MCP joint

36
Q

Extensor Digiti Minimi Innervation

A

radial nerve (C6, C7, C8)

37
Q

Extensor Pollicis Longus O&I

A

origin: posterior lateral surface of the lower middle ulna
insertion: base of distal phalanx of thumb on dorsal surface

38
Q

Extensor Pollicis Longus Action

A

extension of the thumb t the CMC, MCP, IP joints, extension of wrist, abduction of wrist, weak supination

39
Q

Extensor Pollicis Longus Innervation

A

radial nerve (C6, C7, C8)

40
Q

Extensor Pollicis Brevis O&I

A

origin: posterior surface of lower middle radius
insertion: base of proximal phalanx of thumb on dorsal surface

41
Q

Extensor Pollicis Brevis Action

A

extension of the thumb at the CMC, MCP joints, weak wrist extension, abduction of the wrist

42
Q

Extensor Pollicis Brevis Innervation

A

radial nerve (C6, C7)

43
Q

Abductor Pollicis Longus O&I

A

origin: posterior aspect of radius and mid shaft of the ulna
insertion: base of 1st metacarpal on dorsal lateral surface

44
Q

Abductor Pollicis Longus Action

A

abduction of the thumb at the CMC joint, abduction of wrist, extension of thumb at the CMC joint, weak wrist extension, weak supination

45
Q

Abductor Pollicis Longus Innervation

A

radial nerve (C6, C7)

Kinesiology (8 decks)

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