Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Gross Anatomy > Upper Extremity Muscles Week 2 > Flashcards

Upper Extremity Muscles Week 2 Flashcards

0
Q

Brachioradialis insertion (distal attachment)

A

Lateral surface of distal end of radius proximal to styloid process

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
1
Q

Brachioradialis origin (proximal attachment)

A

Proximal two thirds of lateral supraepicondylar ridge of humerus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Brachioradialis innervation

A

Radial nerve (C5, C6, C7)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Brachioradialis action

A

Relatively weak flexion of elbow joint, maximal when forearm is in midpronated position

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Extensor carpi radialis longus origin (proximal attachment)

A

Lateral supraepicondylar ridge of humerus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Extensor carpi radialis longus insertion (distal attachment)

A

Dorsal aspect of base of 2nd metacarpal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Extensor carpi radialis longus innervation

A

Radial nerve (C6, C7)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Extensor carpi radialis longus action

A

Extend and abduct wrist joint

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Extensor carpi radialis brevis origin (proximal attachment)

A

Lateral epicondyle of humerus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Extensor carpi radialis brevis insertion (distal attachment)

A

Dorsal aspect of base of 3rd metacarpal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Extensor carpi radialis brevis innervation

A

Deep branch of radial nerve (C7, C8)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Extensor carpi radialis brevis action

A

Extend and abduct wrist joint; active during fist clenching

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Extensor digitorum origin (proximal attachment)

A

Lateral epicondyle of humerus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Extensor digitorum insertion (distal attachment)

A

Extensor expansions of medial four fingers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Extensor digitorum innervation

A

Deep branch of radial nerve (C7, C8)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Extensor digitorum action

A

Extend wrist joint

Extend medial four fingers primarily at metacarpophalangeal joints, secondarily at interphalangeal joints

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Extensor digiti minimi origin (proximal attachment)

A

Lateral epicondyle of humerus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Extensor digiti minimi insertion (distal attachment)

A

Extensor expansion of 5th finger

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Extensor digiti minimi innervation

A

Posterior interosseous nerve (C7, C8), continuation of deep branch of radial nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Extensor digiti minimi action

A

Extends wrist joint

Extends 5th finger primarily at metacarpophalangeal joint, secondarily at interphalangeal joint

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Extensor carpi ulnaris origin (proximal attachment)

A

Lateral epicondyle of humerus, posterior border of ulna via a shared aponeurosis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Extensor carpi ulnaris insertion (distal attachment)

A

Dorsal aspect of base of 5th metacarpal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Extensor carpi ulnaris innervation

A

Posterior interosseous nerve (C7, C8), continuation of deep branch of radial nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Extensor carpi ulnaris action

A

Extends and adducts wrist joint; active during fist clenching

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Abductor pollicis longus origin (proximal attachment)

A

Posterior surface of proximal halves of ulna, radius, and interosseous membrane

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

Abductor pollicis longus insertion (distal attachment)

A

Base of 1st metacarpal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

Abductor pollicis longus innervation

A

Posterior interosseous nerve (C7, C8), continuation of deep branch of radial nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

Abductor pollicis longus action

A

Extends wrist joint, abducts thumb and extends it at carpometacarpal joint

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

Extensor pollicis longus origin (proximal attachment)

A

Posterior surface of middle third of ulna and interosseous membrane

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

Extensor pollicis longus insertion (distal attachment)

A

Dorsal aspect of base of distal phalanx of thumb

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

Extensor pollicis longus innervation

A

Posterior interosseous nerve (C7, C8), continuation of deep branch of radial nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

Extensor pollicis longus action

A

Extends wrist joint, extends distal phalanx of thumb at interphalangeal joint, extends metacarpophalangeal and carpometacarpal joints

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

Extensor pollicis brevis origin (proximal attachment)

A

Posterior surface of distal third of radius and interosseous membrane

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
33
Q

Extensor pollicis brevis insertion (distal attachment)

A

Dorsal aspect of base of proximal phalanx of thumb

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
34
Q

Extensor pollicis brevis innervation

A

Posterior interosseous nerve (C7, C8), continuation of deep branch of radial nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
35
Q

Extensor pollicis brevis action

A

Extends wrist joint, extends proximal phalanx of thumb at metacarpophalangeal joint, extends carpometacarpal joint

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
36
Q

Extensor indicis origin (proximal attachment)

A

Posterior surface of distal third of ulna and interosseous membrane

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
37
Q

Extensor indicis insertion (distal attachment)

A

Extensor expansion of 2nd finger

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
38
Q

Extensor indicis innervation

A

Posterior interosseous nerve (C7, C8), continuation of deep branch of radial nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
39
Q

Extensor indicis action

A

Extends wrist joint, extends 2nd finger (enabling its independent extensions), helps extend hand at wrist

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
40
Q

Supinator origin (proximal attachment)

A

Lateral epicondyle of humerus, radial collateral and annular ligaments, supinator fossa, crest of ulna

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
41
Q

Supinator insertion (distal attachment)

A

Lateral, posterior, and anterior surfaces of proximal third of radius

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
42
Q

Supinator innervation

A

Deep branch of radial nerve (C7, C8)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
43
Q

Supinator action

A

Supinates forearm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
44
Q

Pronator teres origin (proximal attachment)

A

Ulnar head: coronoid process of ulna

Humeral head: Medial epicondyle of humerus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
45
Q

Pronator teres insertion (distal attachment)

A

Middle of convexity of lateral surface of radius

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
46
Q

Pronator teres innervation

A

Median nerve (C6, C7)

47
Q

Pronator teres action

A

Pronates and flexes forearm

48
Q

Flexor carpi radialis origin (proximal attachment)

A

Medial epicondyle of humerus

49
Q

Flexor carpi radialis insertion (distal attachment)

A

Base of 2nd (3rd) metacarpal

50
Q

Flexor carpi radialis innervation

A

Median nerve (C6, C7)

51
Q

Flexor carpi radialis action

A

Flexes and abducts hand at wrist

52
Q

Palmaris longus origin (proximal attachment)

A

Medial epicondyle of humerus

53
Q

Palmaris longus insertion (distal attachment)

A

Distal half of flexor retinaculum, palmar aponeurosis

54
Q

Palmaris longus innervation

A

Median nerve (C7, C8)

55
Q

Palmaris longus action

A

Flexes hand at wrist and tenses palmar aponeurosis

56
Q

Flexor digitorum superficialis origin (proximal attachment)

A

Humero-ulnar head: medial epicondyle of humerus and coronoid process of ulna
Radial head: oblique line of radius

57
Q

Flexor digitorum superficialis insertion (distal attachment)

A

Shafts (bodies) of middle phalanges of medial four digits

58
Q

Flexor digitorum superficialis innervation

A

Median nerve (C7, C8, T1)

59
Q

Flexor digitorum superficialis actions

A

Flexes wrist joint
Flexes proximal interphalangeal joints of middle four digits; acting more strongly, it also flexes proximal phalanges at metacarpophalangeal joints

60
Q

Flexor carpi ulnaris origin (proximal head)

A

Olecranon and posterior border of ulna (via aponeurosis)

61
Q

Flexor carpi ulnaris insertion (distal attachment)

A

Pisiform, hook of hamate, 5th metacarpal

62
Q

Flexor carpi ulnaris innervation

A

Ulnar nerve (C7, C8)

63
Q

Flexor carpi ulnaris action

A

Flexes and adducts hand at wrist

64
Q

Flexor pollicis longus origin (proximal attachment)

A

Anterior surface of radius and adjacent interosseous membrane

65
Q

Flexor pollicis longus insertion (distal attachment)

A

Base of distal phalanx of thumb

66
Q

Flexor pollicis longus innervation

A

Anterior interosseous nerve, from median nerve (C8, T1)

67
Q

Flexor pollicis longus action

A

Flexes wrist, flexes metacarpophalangeal and interphalangeal joints of thumb

68
Q

Flexor digitorum profundus origin (proximal attachment)

A

Proximal three quarters of medial and anterior surfaces of ulna and interosseous membrane

69
Q

Flexor digitorum profundus insertion (distal attachment)

A

Bases of distal phalanges of 2nd-5th digits

70
Q

Flexor digitorum profundus innervation

A

Lateral part (digits 2 and 3): Median nerve (C8, T1) (anterior interosseous branch)

Medial part (digits 4 and 5): Ulnar nerve (C8, T1)

71
Q

Flexor digitorum profundus action

A

Flexes wrist joint

Flexes distal interphalangeal joints of digits 2-5; assists with wrist flexion

72
Q

Pronator quadratus origin (proximal attachment)

A

Distal quarter of anterior surface of ulna

73
Q

Pronator quadratus insertion (distal attachment)

A

Distal quarter of anterior surface of radius

74
Q

Pronator quadratus innervation

A

Anterior interosseous nerve, from median nerve (C8, T1)

75
Q

Pronator quadratus action

A

Pronates forearm; deep fibers bind radius and ulna together

76
Q

Abductor pollicis brevis origin (proximal attachment)

A

Flexor retinaculum and tubercles of scaphoid and trapezium

77
Q

Abductor pollicis brevis insertion (distal attachment)

A

Lateral side of base of proximal phalanx of thumb

78
Q

Abductor pollicis brevis innervation

A

Recurrent branch of median nerve (C8, T1)

79
Q

Abductor pollicis brevis action

A

Abducts thumb; helps oppose it

80
Q

Flexor pollicis brevis origin (proximal attachment)

A

Flexor retinaculum and tubercles of scaphoid and trapezium

81
Q

Flexor pollicis brevis insertion (distal attachment)

A

Lateral side of base of proximal phalanx of thumb

82
Q

Flexor pollicis brevis innervation

A

Recurrent branch of median nerve (C8, T1)

83
Q

Flexor pollicis brevis action

A

Flexes thumb

84
Q

Oppnens pollicis origin (proximal attachment)

A

Flexor retinaculum and tubercles of scaphoid and trapezium

85
Q

Oppnens pollicis insertion (distal attachment)

A

Lateral side of 1st metacarpal

86
Q

Oppnens pollicis innervation

A

Recurrent branch of median nerve (C8, T1)

87
Q

Oppnens pollicis action

A

To oppose thumb, it draws 1st metacarpal medially to center of palm and rotates it medially

88
Q

Abductor digiti minimi origin (proximal attachment)

A

Pisiform

89
Q

Abductor digiti minimi insertion (distal attachment)

A

Medial side of base of proximal phalanx of 5th finger

90
Q

Abductor digiti minimi innervation

A

Deep branch of ulnar nerve (C8, T1)

91
Q

Abductor digiti minimi action

A

Abducts 5th finger, assists in flexion of its proximal phalanx

92
Q

Flexor digiti minimi brevis origin (proximal attachment)

A

Hook of hamate and flexor retinaculum

93
Q

Flexor digiti minimi brevis insertion (distal attachment)

A

Medial side of base of proximal phalanx of 5th finger

94
Q

Flexor digiti minimi brevis innervation

A

Deep branch of ulnar nerve (C8, T1)

95
Q

Flexor digiti minimi brevis action

A

Flexes proximal phalanx of 5th finger

96
Q

Opponens digiti minimi origin (proximal attachment)

A

Hook of hamate and flexor retinaculum

97
Q

Opponens digiti minimi insertion (distal attachment)

A

Medial border of 5th metacarpal

98
Q

Opponens digiti minimi innervation

A

Deep branch of ulnar nerve (C8, T1)

99
Q

Opponens digiti minimi action

A

Draws 5th metacarpal anterior and rotates it, bringing 5th finger into opposition with thumb

100
Q

Lumbricals origins (proximal attachments)

A

1 and 2: Lateral two tendons of flexor digitorum profundus (as unipennate muscles)

3 and 4: Medial three tendons of flexor digitorum profundus (as bipennate muscles)

101
Q

Lumbricals insertion (distal attachment)

A

Lateral sides of extensor expansions of 2nd-5th fingers

102
Q

Lumbricals innervation

A

1 and 2: Median nerve (C8, T1)

3 and 4: Ulnar nerve (C8, T1)

103
Q

Lumbricals action

A

Flex metacarpophalangeal joints; extend interphalangeal joints of 2nd-5th fingers

104
Q

Dorsal interossei 1-4 origin (proximal attachment)

A

Adjacent sides of two metacarpals (as bipennate muscles)

105
Q

Dorsal interossei 1-4 insertion (distal attachment)

A

Bases of proximal phalanges; extensor expansions of 2nd-4th fingers

106
Q

Dorsal interossei 1-4 innervation

A

Deep branch of ulnar nerve (C8, T1)

107
Q

Dorsal interossei 1-4 action

A

Abduct 2nd-4th fingers from axial line; act with lumbricals in flexing metacarpophangeal joints and extending interphalangeal joints

108
Q

Palmar interossei 1-3 origin (proximal attachment)

A

Palmar surfaces of 2nd, 4th, and 5th metacarpals (as unipennate muscles)

109
Q

Palmar interossei 1-3 insertion (distal attachment)

A

Bases of proximal phalanges; extensor expansions of 2nd, 4th, and 5th fingers

110
Q

Palmar interossei 1-3 innervation

A

Deep branch of ulnar nerve (C8, T1)

111
Q

Palmar interossei 1-3 action

A

Adduct 2nd, 4th, and 5th fingers toward axial line; assists lumbricals in flexing metacarpophalangeal joints and extending interphalangeal joints

112
Q

Adductor pollicis origin (proximal attachment)

A

Oblique head: Bases of 2nd and 3rd metacarpals, capitate, adjacent carpals

Transverse head: Anterior surface of body (shaft) of 3rd metacarpal

113
Q

Adductor pollicis insertion (distal attachment)

A

Medial side of base of proximal phalanx of thumb

114
Q

Adductor pollicis innervation

A

Deep branch of ulnar nerve (C8, T1)

115
Q

Adductor pollicis action

A

Adducts thumb toward lateral border of palm

Gross Anatomy (6 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions