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MS100 > Muscles of the arm and hand lecture 8 > Flashcards

Muscles of the arm and hand lecture 8 Flashcards

1
Q

Pronator Teres Orgin; humeral head

A

Medial epicondyle of the humerus above common flexor orgin (CFO)

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2
Q
A
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3
Q

Pronator Teres Ulnar head orgin

A

coronoid process of the ulna

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4
Q

Pronator Teres insertion

A

midlateral surface of shaft radius

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5
Q

Pronator Teres Nerve

A

median nerve

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6
Q

Pronator Teres action

A

pronate forearm and elbow flexion

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7
Q

Flexor Carpi Radialis (FCR) orgin

A

medial epicondyle of the humerus via the common flexor tendon

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8
Q

Flexor Carpi Radialis (FCR) insertion

A

Base of 2nd and 3rd meta carpals (palmar surface)

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9
Q

Flexor Carpi Radialis (FCR) nerve

A

median nerve

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10
Q

Flexor Carpi Radialis (FCR) movement

A

flex and radially deviate wrist

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11
Q

palmaris longus (PL) orgin

A

medial epicondyle of humerus via the common flexor tendon

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12
Q

palmaris longus (PL) insertion

A

palmar carpal ligament and palmar aponeurosis

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13
Q

palmaris longus (PL) nerve

A

median nerve

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14
Q

Flexor Carpi Ulnaris (FCU) humeral head origin

A

medial epicondyle via the common flexor tendon

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15
Q

Flexor Carpi Ulnaris (FCU) ulnar head origin

A

olecranon and posterior border of ulna (superior 2/3)

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16
Q

Flexor Carpi Ulnaris (FCU) insertion

A

pisiform, hook of hamate, base of 5th metacarpal

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17
Q

Flexor Carpi Ulnaris (FCU) nerve

A

ulnar nerve

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18
Q

Flexor Carpi Ulnaris movement

A

flexes and ulnar deviates wrist

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19
Q

palmaris longus (PL) movement

A

flexes wrist and tightens palmar aponeurosis (pincer grasp)

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20
Q

which muscle is unilaterally absent in 16% of the population and 9% bilaterally?

A

Palmaris longus

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21
Q

what muscle can play a factor in cubital tunnel syndrome?

A

Flexor Carpi Ulnaris

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22
Q

Flexor digitorum superficialis (FDS) origin humeral head

A

medial epicondyle of the humerus and coronoid process of the ulna

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23
Q

Flexor digitorum superficialis (FDS) origin radial head

A

oblique line of the radius (anterior surface)

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24
Q

Flexor digitorum superficialis (FDS) insertion

A

shaft of middle phalanges digits 2-5

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25
Q

Flexor digitorum superficialis (FDS) nerve

A

median nerve

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26
Q

Flexor digitorum superficialis (FDS) movement

A

flexion of MCP and PIP joints and wrist flexion

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27
Q

tendinous arch between 2 heads is where the median nerve and ulnar nerve pass to get to deep muscles what associated muscle?

A

Flexor digitorum superficialis (FDS)

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28
Q

Flexor digitorum profundus origins

A

( proximal 2/3 ) anterior surface of ulna and interosseous membrane

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29
Q

Flexor digitorum profundus does or does not have a radial origin

A

Flexor digitorum profundus does not have a radial origin

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30
Q

Flexor digitorum profundus insertion

A

bases of distal phalanges of digits 2-5

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31
Q

Flexor digitorum profundus shares a common tendonious sheath with what muscle?

A

Flexor digitorum superficialis

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32
Q

Flexor digitorum profundus _____ and ____ nerves for lateral part of muscle ______ nerve for medial part of muscle

A

median and ulnar, ulnar

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33
Q

Flexor digitorum profundus movement

A

DIP and wrist flexion

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34
Q

Flexor pollicis longus (FPL) orgin

A

anterior surface of radius, interosseous membrane

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35
Q

Flexor pollicis longus (FPL) insertion

A

base of distal phalanx of 1st digit

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36
Q

Flexor pollicis longus (FPL) nerve

A

median nerve

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37
Q

Flexor pollicis longus (FPL) action

A

flexion of the 1st digit

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38
Q

does Flexor pollicis longus (FPL) have an ulnar origin

A

no

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39
Q

Pronator quadratus (PQ) origin

A

distal 1/4 of the anterior surface of the ulna

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40
Q

Pronator quadratus insertion

A

distal 1/4 of the anterior surface of the radius

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41
Q

Pronator quadratus nerve

A

median nerve

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42
Q

Pronator quadratus action

A

forearm pronation

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43
Q

Brachioradialis (BR) origin

A

Lateral supracondylar
ridge of the humerus

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44
Q

Brachio Radialis (BR) insertion

A

Base of styloid process
of the radius

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45
Q

Brachio Radialis (BR) action

A

Flexes forearm at elbow
joint and rotates forearm
to the midprone position

46
Q

Extensor Carpi Radialis
Longus (ECRL) origin

A

Distal 1/3 of the
lateral supracondylar
ridge of humerus

47
Q

Extensor Carpi Radialis
Longus (ECRL) insertion

A

Base of 2nd
metacarpal
(dorsal surface)

48
Q

Extensor Carpi Radialis
Longus (ECRL) action

A

Extends and radially
deviates the
wrist

49
Q

Extensor Carpi Radialis Brevis (ECRB) origin

A

Lateral epiondyle of
humerus via common
extensor tendon

50
Q

Extensor Carpi Radialis Brevis (ECRB) insertion

A

Base of 3rd
metacarpal
(dorsal and radial
surface)

51
Q

Extensor Carpi Radialis Brevis (ECRB) action

A

Extends and radially
deviates the
wrist

52
Q

stopped nerve cards at pronator quadratous

A
53
Q

Extensor Digitorum (ED) origin

A

Lateral epicondyle of
humerus via common
extensor tendon

54
Q

Extensor Digitorum (ED) insertion

A

Middle and distal
phalanges of the
medial 4 digits

55
Q

Extensor Digitorum (ED) action

A

Extends medial 4 digits
at MCP and IP joints
and assists wrist
extension

56
Q

Extensor Digiti Minimi (EDM) origin

A

Lateral epicondyle of
humerus via common
extensor tendon

57
Q

Extensor Digiti Minimi (EDM) insertion

A

Tendon of extensor
digitorum on 5th
digit (extensor expansion
or hood)

58
Q

Extensor Digiti Minimi (EDM) action

A

Extends 5th digit at MCP
and IP joints

59
Q

Extensor Carpi Ulnaris (ECU) origin

A

Lateral epicondyle of
humerus via common
extensor tendon and
posterior border of
the ulna

60
Q

Extensor Carpi Ulnaris (ECU) insertion

A

Base of 5th
metacarpal
(ulnar surface)

61
Q

Extensor Carpi Ulnaris (ECU) action

A

Extends and ulnarly
deviates (adducts) the
wrist

62
Q

Supinator origin

A

Lateral epiocondyle of
humerus, radial collateral
and annular ligaments,
and the supinator crest
of the ulna

63
Q

Supinator insertion

A

Superior 1/3 of the
lateral and anterior
surface of the radius

64
Q

Supinator action

A

Supinates forearm and
may assist in elbow flexion

65
Q

Abductor Pollicis Longus (AbdPL) origin

A

Posterior surface of
middle of radius and
ulna and interosseus
membrane

66
Q

Abductor Pollicis Longus insertion (AbdPL)

A

Base of 1st
metacarpal
(lateral/radial side)

67
Q

Abductor Pollicis Longus action (AbdPL)

A

Abducts and extends
first digit (thumb) at
carpometacarpal joint
and abducts wrist
(push thumb into table)

68
Q

Extensor Pollicis Longus (EPL) origin

A

Middle 1/3 of the
posterior surface of
the ulna and the
interosseus membrane

69
Q

Extensor Pollicis Longus (EPL) insertion

A

Base of the distal
phalanx of the thumb

70
Q

Extensor Pollicis Longus (EPL) action

A

Extends IP joint of first
digit (thumb) and assists
extension at the MCP
joint

71
Q

Extensor Pollicis Brevis (EPB) origin

A

Posterior surface of
the middle of the
radius and
interosseus membrane

72
Q

Extensor Pollicis Brevis (EPB) insertion

A

Base of proximal
phalanx of thumb

73
Q

Extensor Pollicis Brevis (EPB) action

A

Extends MCP joint of the
first digit (thumb)

74
Q

Extensor Indicis (EI) origin

A

Distal posterior
surface of the ulna and
interroseus membrane

75
Q

Extensor Indicis (EI) insertion

A

Tendon of extensor
digitorum on the
2nd digit
(extensor expansion
or hood)

76
Q

Extensor Indicis (EI) action

A

Extends 2nd digit at the
MCP and IP jts.

77
Q

Abductor Pollicis Brevis origin

A

Flexor retinaculum,
scaphoid and tubercle
of the trapezium

78
Q

Abductor Pollicis Brevis insertion

A

Base of proximal
phalanx of first digit
(lateral/radial aspect)

79
Q

Abductor Pollicis Brevis action

A

Abducts first digit at CMC
joint

80
Q

Opponens Pollicis origin

A

Flexor retinaculum
and trapezium

81
Q

Opponens Pollicis insertion

A

Lateral shaft of first
metacarpal
(radial side)

82
Q

Opponens Pollicis action

A

Opposition of the first digit
at the CMC joint

83
Q

Flexor Pollicis Brevis origin

A

Flexor retinaculum and
trapezium

84
Q

Flexor Pollicis Brevis insertion

A

Base of proximal
phalanx of first digit
(lateral/radial aspect)

85
Q

Flexor Pollicis Brevis action

A

Flexes first digit at MCP
and CMC joints

86
Q

Adductor Pollicis origin Oblique head:

A

Capiate and bases of
metacarpals 2 and 3

87
Q

Adductor Pollicis insertion

A

Medial side of
proximal phalanx of
thumb (migraine trigger point)

88
Q

Adductor Pollicis action

A

Adducts first digit and
assists with flexion at
MCP and CMC joint

89
Q

Adductor Pollicis origin Transverse head:

A

3rd metacarpal - anterior
surface (palmar)

90
Q

Palmaris Brevis origin

A

Flexor retinaculum
and palmar aponeurosis

91
Q

Palmaris Brevis insertion

A

Skin on ulnar border
of palm of hand

92
Q

Palmaris Brevis action

A

Draws skin toward
middle of palm
(Italian gesture)

93
Q

Abductor Digiti Minimi origin

A

Pisiform

94
Q

Abductor Digiti Minimi insertion

A

Base of proximal
phalanx of 5th digit

95
Q

Abductor Digiti Minimi action

A

Abducts 5th digit
at MCP joint

96
Q

Flexor Digiti Minimi Brevis origin

A

Flexor retinaculum
and hook of hamate

97
Q

Flexor Digiti Minimi Brevis insertion

A

Base of proximal
phalanx of 5th digit

98
Q

Flexor Digiti Minimi Brevis action

A

Flexes 5th digit at the
MCP joint

99
Q

Opponens Digiti Minimi origin

A

Flexor retinaculum
and hook of the hamate

100
Q

Opponens Digiti Minimi insertion

A

Medial border of
shaft of 5th metacarpal

101
Q

Opponens Digiti Minimi action

A

Opposition of 5th digit
at CMC joint

102
Q

Lumbricales origin

A

Tendons of flexor
digitorum profundus
(off lateral aspect of
2nd-5th tendons and
off medial aspect of 3rd
& 4th tendons also)

103
Q

Lumbricales insertion

A

Extensor expansions
(hoods) of digits 2 - 5

104
Q

Lumbricales action

A

Flexes at MCP joints and
extends at IP joints

105
Q

Dorsal Interosseii origin

A

Adjacent sides of the
shaft of the metacarpals
(2 heads)

106
Q

Dorsal Interosseii insertion

A

Extensor expansions
and bases of proximal
phalanges of digits
2, 3, 4

107
Q

Dorsal Interosseii action

A

Abduct digits, flexes at
MCP joints and
extends at IP joints

108
Q

Palmar Interosseii origin

A

Palmar medial surface of
2nd metacarpal and
palmar lateral surface
of 4th & 5th metacarpal
(1 head)

109
Q

Palmar Interosseii insertion

A

Extensor expansions
and bases of proximal
phalanges of digits
2, 4, and 5

110
Q

Palmar Interosseii action

A

Adduct digits and
flexes MCP joints and
extends at IP joints

MS100 (16 decks)

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