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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
Flexor digitorum superficialis (FDS) nerve
median nerve
26
Flexor digitorum superficialis (FDS) movement
flexion of MCP and PIP joints and wrist flexion
27
tendinous arch between 2 heads is where the median nerve and ulnar nerve pass to get to deep muscles what associated muscle?
Flexor digitorum superficialis (FDS)
28
Flexor digitorum profundus origins
( proximal 2/3 ) anterior surface of ulna and interosseous membrane
29
Flexor digitorum profundus does or does not have a radial origin
Flexor digitorum profundus does not have a radial origin
30
Flexor digitorum profundus insertion
bases of distal phalanges of digits 2-5
31
Flexor digitorum profundus shares a common tendonious sheath with what muscle?
Flexor digitorum superficialis
32
Flexor digitorum profundus _____ and ____ nerves for lateral part of muscle ______ nerve for medial part of muscle
median and ulnar, ulnar
33
Flexor digitorum profundus movement
DIP and wrist flexion
34
Flexor pollicis longus (FPL) orgin
anterior surface of radius, interosseous membrane
35
Flexor pollicis longus (FPL) insertion
base of distal phalanx of 1st digit
36
Flexor pollicis longus (FPL) nerve
median nerve
37
Flexor pollicis longus (FPL) action
flexion of the 1st digit
38
does Flexor pollicis longus (FPL) have an ulnar origin
no
39
Pronator quadratus (PQ) origin
distal 1/4 of the anterior surface of the ulna
40
Pronator quadratus insertion
distal 1/4 of the anterior surface of the radius
41
Pronator quadratus nerve
median nerve
42
Pronator quadratus action
forearm pronation
43
Brachioradialis (BR) origin
Lateral supracondylar ridge of the humerus
44
Brachio Radialis (BR) insertion
Base of styloid process of the radius
45
Brachio Radialis (BR) action
Flexes forearm at elbow joint and rotates forearm to the midprone position
46
Extensor Carpi Radialis Longus (ECRL) origin
Distal 1/3 of the lateral supracondylar ridge of humerus
47
Extensor Carpi Radialis Longus (ECRL) insertion
Base of 2nd metacarpal (dorsal surface)
48
Extensor Carpi Radialis Longus (ECRL) action
Extends and radially deviates the wrist
49
Extensor Carpi Radialis Brevis (ECRB) origin
Lateral epiondyle of humerus via common extensor tendon
50
Extensor Carpi Radialis Brevis (ECRB) insertion
Base of 3rd metacarpal (dorsal and radial surface)
51
Extensor Carpi Radialis Brevis (ECRB) action
Extends and radially deviates the wrist
52
stopped nerve cards at pronator quadratous
53
Extensor Digitorum (ED) origin
Lateral epicondyle of humerus via common extensor tendon
54
Extensor Digitorum (ED) insertion
Middle and distal phalanges of the medial 4 digits
55
Extensor Digitorum (ED) action
Extends medial 4 digits at MCP and IP joints and assists wrist extension
56
Extensor Digiti Minimi (EDM) origin
Lateral epicondyle of humerus via common extensor tendon
57
Extensor Digiti Minimi (EDM) insertion
Tendon of extensor digitorum on 5th digit (extensor expansion or hood)
58
Extensor Digiti Minimi (EDM) action
Extends 5th digit at MCP and IP joints
59
Extensor Carpi Ulnaris (ECU) origin
Lateral epicondyle of humerus via common extensor tendon and posterior border of the ulna
60
Extensor Carpi Ulnaris (ECU) insertion
Base of 5th metacarpal (ulnar surface)
61
Extensor Carpi Ulnaris (ECU) action
Extends and ulnarly deviates (adducts) the wrist
62
Supinator origin
Lateral epiocondyle of humerus, radial collateral and annular ligaments, and the supinator crest of the ulna
63
Supinator insertion
Superior 1/3 of the lateral and anterior surface of the radius
64
Supinator action
Supinates forearm and may assist in elbow flexion
65
Abductor Pollicis Longus (AbdPL) origin
Posterior surface of middle of radius and ulna and interosseus membrane
66
Abductor Pollicis Longus insertion (AbdPL)
Base of 1st metacarpal (lateral/radial side)
67
Abductor Pollicis Longus action (AbdPL)
Abducts and extends first digit (thumb) at carpometacarpal joint and abducts wrist (push thumb into table)
68
Extensor Pollicis Longus (EPL) origin
Middle 1/3 of the posterior surface of the ulna and the interosseus membrane
69
Extensor Pollicis Longus (EPL) insertion
Base of the distal phalanx of the thumb
70
Extensor Pollicis Longus (EPL) action
Extends IP joint of first digit (thumb) and assists extension at the MCP joint
71
Extensor Pollicis Brevis (EPB) origin
Posterior surface of the middle of the radius and interosseus membrane
72
Extensor Pollicis Brevis (EPB) insertion
Base of proximal phalanx of thumb
73
Extensor Pollicis Brevis (EPB) action
Extends MCP joint of the first digit (thumb)
74
Extensor Indicis (EI) origin
Distal posterior surface of the ulna and interroseus membrane
75
Extensor Indicis (EI) insertion
Tendon of extensor digitorum on the 2nd digit (extensor expansion or hood)
76
Extensor Indicis (EI) action
Extends 2nd digit at the MCP and IP jts.
77
Abductor Pollicis Brevis origin
Flexor retinaculum, scaphoid and tubercle of the trapezium
78
Abductor Pollicis Brevis insertion
Base of proximal phalanx of first digit (lateral/radial aspect)
79
Abductor Pollicis Brevis action
Abducts first digit at CMC joint
80
Opponens Pollicis origin
Flexor retinaculum and trapezium
81
Opponens Pollicis insertion
Lateral shaft of first metacarpal (radial side)
82
Opponens Pollicis action
Opposition of the first digit at the CMC joint
83
Flexor Pollicis Brevis origin
Flexor retinaculum and trapezium
84
Flexor Pollicis Brevis insertion
Base of proximal phalanx of first digit (lateral/radial aspect)
85
Flexor Pollicis Brevis action
Flexes first digit at MCP and CMC joints
86
Adductor Pollicis origin Oblique head:
Capiate and bases of metacarpals 2 and 3
87
Adductor Pollicis insertion
Medial side of proximal phalanx of thumb (migraine trigger point)
88
Adductor Pollicis action
Adducts first digit and assists with flexion at MCP and CMC joint
89
Adductor Pollicis origin Transverse head:
3rd metacarpal - anterior surface (palmar)
90
Palmaris Brevis origin
Flexor retinaculum and palmar aponeurosis
91
Palmaris Brevis insertion
Skin on ulnar border of palm of hand
92
Palmaris Brevis action
Draws skin toward middle of palm (Italian gesture)
93
Abductor Digiti Minimi origin
Pisiform
94
Abductor Digiti Minimi insertion
Base of proximal phalanx of 5th digit
95
Abductor Digiti Minimi action
Abducts 5th digit at MCP joint
96
Flexor Digiti Minimi Brevis origin
Flexor retinaculum and hook of hamate
97
Flexor Digiti Minimi Brevis insertion
Base of proximal phalanx of 5th digit
98
Flexor Digiti Minimi Brevis action
Flexes 5th digit at the MCP joint
99
Opponens Digiti Minimi origin
Flexor retinaculum and hook of the hamate
100
Opponens Digiti Minimi insertion
Medial border of shaft of 5th metacarpal
101
Opponens Digiti Minimi action
Opposition of 5th digit at CMC joint
102
Lumbricales origin
Tendons of flexor digitorum profundus (off lateral aspect of 2nd-5th tendons and off medial aspect of 3rd & 4th tendons also)
103
Lumbricales insertion
Extensor expansions (hoods) of digits 2 - 5
104
Lumbricales action
Flexes at MCP joints and extends at IP joints
105
Dorsal Interosseii origin
Adjacent sides of the shaft of the metacarpals (2 heads)
106
Dorsal Interosseii insertion
Extensor expansions and bases of proximal phalanges of digits 2, 3, 4
107
Dorsal Interosseii action
Abduct digits, flexes at MCP joints and extends at IP joints
108
Palmar Interosseii origin
Palmar medial surface of 2nd metacarpal and palmar lateral surface of 4th & 5th metacarpal (1 head)
109
Palmar Interosseii insertion
Extensor expansions and bases of proximal phalanges of digits 2, 4, and 5
110
Palmar Interosseii action
Adduct digits and flexes MCP joints and extends at IP joints

MS100 (23 decks)

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