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MABS Anatomy Forearm and Hand > Forearm > Flashcards

Forearm Flashcards

(104 cards)

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1
Q

pronator teres origin?

A

medial humeral epicondyle and coronoid process of ulna

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2
Q

pronator teres distal?

A

mid-shaft of radius

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3
Q

pronator teres innervation?

A

median n

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4
Q

pronator teres action?

A

forearm pronation

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5
Q

flexor carpi radialis (FCR) origin?

A

medial humeral epicondyle

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6
Q

flexor carpi radialis (FCR) distal?

A

base of metacarpals II and III

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7
Q

flexor carpi radialis (FCR) innervation?

A

median n

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8
Q

flexor carpi radialis (FCR) action?

A

wrist flexion and abduction

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9
Q

palmaris longus origin?

A

medial humeral epicondyle

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10
Q

palmaris longus distal?

A

palmar Fascia (aponeurosis)

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11
Q

palmaris longus innervation?

A

median n

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12
Q

palmaris longus action?

A

flexion at wrist

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13
Q

flexor carpi ulnaris origin?

A

medial humeral epicondyle; ulna

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14
Q

flexor carpi ulnaris distal?

A

pisiform carpal bone

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15
Q

flexor carpi ulnaris innervation?

A

ulnar n

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16
Q

flexor carpi ulnaris action?

A

flexion and adduction at wrist

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17
Q

flexor digitorum superficialis (FDS) origin?

A

medial epicondyle of the humerus and oblique line of the radius

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18
Q

flexor digitorum superficialis (FDS) distal?

A

middle phalanges of digits 2-5

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19
Q

flexor digitorum superficialis (FDS) innervation?

A

median n

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20
Q

flexor digitorum superficialis (FDS) action?

A

middle phalanges of medial four fingers at proximal interphalangeal joints

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21
Q

flexor digitorum profundus (FDP) origin?

A

anterior and medial surface of ulna and interosseous membrane: It divides into four tendons that pass posterior to FDS tendons and flexor retinaculum

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22
Q

flexor digitorum profundus (FDP) distal?

A

distal phalanges of digits 2-5.

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23
Q

flexor digitorum profundus (FDP) innervation?

A

lateral half by median n; medial by ulnar n

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24
Q

flexor digitorum profundus (FDP) action?

A

only m to flex distal interphalangeal joints

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25
flexor pollicis longus (FPL) origin?
inferior radius
26
flexor pollicis longus (FPL) distal?
distal phalanx of thumb
27
flexor pollicis longus (FPL) innervation?
median n
28
flexor pollicis longus (FPL) action?
Flexes thumb’s interphalangeal joint and MCP joint
29
pronator quadratus origin?
anterior ulna
30
pronator quadratus distal?
anterior radius
31
pronator quadratus innervation?
median n
32
pronator quadratus action?
pronates forearm
33
brachioradialis origin?
supra-epicondylar ridge of humerus
34
brachioradialis distal?
distal radius proximal to styloid process
35
brachioradialis innervation?
radial nerve (C5, C6, C7)
36
brachioradialis action?
weak forearm flexion, maximum in mid-pronated position
37
extensor carpi radialis longus (ECRL) origin?
supra-epicondylar ridge of humerus
38
extensor carpi radialis longus (ECRL) distal?
base of 2nd metacarpal dorsally
39
extensor carpi radialis longus (ECRL) innervation?
radial nerve (C6, C7)
40
extensor carpi radialis longus (ECRL) action?
extend and abduct the hand, active during clenching
41
extensor carpi radialis brevis (ECRB) origin?
lateral epicondyle of humerus via the common extensor tendon
42
extensor carpi radialis brevis (ECRB) distal?
base of 3rd metacarpal dorsally
43
extensor carpi radialis brevis (ECRB) innervation?
radial nerve (C6, C7)
44
extensor carpi radialis brevis (ECRB) action?
extend and abduct the hand, active during clenching
45
extensor digitorum origin?
lateral epicondyle of humerus via the common extensor tendon
46
extensor digitorum distal?
extensor expansions of medial 4 digits
47
extensor digitorum innervation?
deep branch of radial nerve (C7, C8)
48
extensor digitorum action?
extends medial 4 digits at metacarpophalangeal and interphalangeal joints
49
extensor digiti minimi (EDM) origin?
lateral epicondyle of humerus via the common extensor tendon
50
extensor digiti minimi (EDM) distal?
extensor expansions of 5th digit
51
extensor digiti minimi (EDM) innervation?
deep branch of radial nerve (C7, C8)
52
extensor digiti minimi (EDM) action?
extends 5th digit at metacarpophalangeal and interphalangeal joints
53
extensor carpi ulnaris (ECU) origin?
lateral epicondyle of humerus via the common extensor tendon, ulna
54
extensor carpi ulnaris (ECU) distal?
base of 5th metacarpal dorsally
55
extensor carpi ulnaris (ECU) innervation?
deep branch of radial nerve (C7, C8)
56
extensor carpi ulnaris (ECU) action?
extends and adducts hand (also active during fist clenching)
57
supinator origin?
lateral epicondyle of humerus, radial collateral and annular ligaments, supinator fossa and ulna
58
supinator distal?
lateral, posterior and anterior surfaces of radius
59
supinator innervation?
deep branch of radial n
60
supinator action?
supinates forearm
61
extensor indicis origin?
posterior surface of the ulna and interosseous membrane
62
extensor indicis distal?
extensor expansion of 2nd digit
63
extensor indicis innervation?
radial (posterior interosseous) n
64
extensor indicis action?
extends 2nd digit, helps extend hand at wrist
65
extensor pollicis brevis origin?
radius ;interosseous membrane
66
extensor pollicis brevis distal?
proximal phalanx of thumb
67
extensor pollicis brevis innervation?
radial (posterior interosseous) n
68
extensor pollicis brevis action?
short extensor of the thumb at MCP joint
69
Opponens Pollicis origin?
tubercle of the trapezium, and the associated flexor retinaculum.
70
Opponens Pollicis distal?
lateral surface of the first metacarpal
71
Opponens Pollicis innervation?
median n
72
Opponens Pollicis action?
Opposes the thumb, by medially rotating and flexing metacarpal on trapezium.
73
Abductor Pollicis Brevis origin?
tubercles of the scaphoid and trapezium; flexor retinaculum
74
Abductor Pollicis Brevis distal?
lateral side of proximal phalanx of the thumb
75
Abductor Pollicis Brevis innervation?
median n
76
Abductor Pollicis Brevis action?
Abducts the thumb
77
Flexor Pollicis Brevis origin?
tubercle of the flexor retinaculum
78
Flexor Pollicis Brevis distal?
base of the proximal phalanx of the thumb.
79
Flexor Pollicis Brevis innervation?
median n
80
Flexor Pollicis Brevis action?
flexes MCP1 (thumb)
81
Opponens Digiti Minimi origin?
hamulus of hamate
82
Opponens Digiti Minimi distal?
medial margin of metacarpal V
83
Opponens Digiti Minimi innervation?
ulnar n
84
Opponens Digiti Minimi action?
It rotates metacarpal of digit 5 towards palm, producing opposition
85
Abductor Digiti Minimi origin?
pisiform; tendon of FCR
86
Abductor Digiti Minimi distal?
base of the proximal phalanx of the little finger
87
Abductor Digiti Minimi innervation?
ulnar n
88
Abductor Digiti Minimi action?
abducts digit 5 [D5]
89
Flexor Digiti Minimi Brevis origin?
Hamulus of flexor retinaculum
90
Flexor Digiti Minimi Brevis distal?
proximal phalanx of digit 5
91
Flexor Digiti Minimi Brevis innervation?
ulnar n
92
Flexor Digiti Minimi Brevis action?
Flexes the MCP joint of digit 5
93
dorsal interossei origin?
Each interossei originates from lateral and medial surfaces of metacarpals
94
dorsal interossei distal?
attach into extensor hood (AKA expnation) and proximal phalanx of each finger
95
dorsal interossei innervation?
ulnar n
96
dorsal interossei action?
abduct fingers at metacarpalphalangeal (MCP) joint
97
palmar interossei origin?
Each interossei
98
palmar interossei distal?
medial or lateral surface of a metacarpal (2, 3, 5) and attaches into the extensor hood and proximal phalanx of same finger (digit).
99
palmar interossei innervation?
ulnar n
100
palmar interossei action?
adducts fingers at MCP joint.
101
lumbricals origin?
from a tendon of flexor digitorum profundus They pass dorsally and laterally around each finger
102
lumbricals distal?
into the extensor hood
103
lumbricals innervation?
The lateral two lumbricals (of the index [D2] and middle [D3] fingers innervated by the median n medial two lumbricals (little [D5], and ring [D4]fingers) are innervated by the ulnar n
104
lumbricals action?
flex at the MCP joint, and extend at IP joints of each finger

MABS Anatomy Forearm and Hand (2 decks)

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