Forearm Flashcards
(123 cards)
1
Q
Brachioradialis insertion
A
Styloid process of the radius
2
Q
Brachioradialis innervation
A
Radial n. C5-C6
3
Q
Brachioradialis action
A
Elbow: flexion
Forearm: semipronation
4
Q
Extensor carpi radialis longus origin
A
Lateral supracondylar ridge of distal humerus; lateral intermuscular septum
5
Q
Extensor carpi radialis longus insertion
A
2nd metacarpal (base)
6
Q
Extensor carpi radialis longus innervation
A
Radial n. C6-C7
7
Q
Extensor carpi radialis longus and brevis action
A
Elbow: weak flexion
Wrist: extension and abduction
8
Q
Extensor carpi radialis brevis origin
A
Lateral epicondyle of humerus
9
Q
Extensor carpi radialis brevis insertion
A
3rd metacarpal (base)
10
Q
Extensor carpi radialis brevis innervation
A
Radial n. C7-C8
11
Q
Extensor digitorum and extensor digiti minimi origin
A
Common head (lateral epicondyle of humerus)
12
Q
Extensor digitorum insertion
A
Dorsal digital expansion of 2nd to 5th digits
13
Q
Extensor digitorum, extensor digiti minimi, and extensor carpi ulnaris innervation
A
Posterior interosseous branch of radial nerve C7-C8
14
Q
Extensor digitorum action
A
Wrist: extension
MCP, PIP, and DIP of 2nd to 5th digits;
Extension/abduction of fingers
15
Q
Extensor digiti minimi insertion
A
Dorsal digital expansion of 5th metacarpal
16
Q
Extensor digiti minimi action
A
Wrist: extension, ulnar abduction of hand
MCP, PIP, and DIP of 5th digit:
Extension and abduction of 5th digit
17
Q
Extensor carpi ulnaris origin
A
Common head (lateral epicondyle of humerus) Ulnar head (dorsal surface)
18
Q
Extensor carpi ulnaris insertion
A
Base of 5th metacarpal
19
Q
Extensor carpi ulnaris action
A
Wrist: extension, adduction (ulnar deviation) of hand
20
Q
Brachioradialis origin
A
Distal humerus (distal surface); lateral intermuscular septum
21
Q
Supinator origin
A
Olecranon, lat. epicondyle of humerus, radial collateral ligament, annular ligament of radius
22
Q
Supinator insertion
A
Radius (between radial tuberosity and insertion of pronator teres)
23
Q
Supinator innervation
A
Posterior interosseous branch of radial nerve C6-C7
24
Q
Supinator action
A
Radioulnar joints: supination
25
Abductor pollicus longus origin
Radius and ulna( dorsal surfaces, interosseous membrane)
26
Abductor pollicus longus insertion
Base of 1st metacarpal
27
Abductor pollicus longus, extensor pollicus brevis, extensor pollicus longus, extensor indicis innervation
Posterior interosseous branch of the radial nerve C7-C8
28
Abductor pollicus longus action
Radiocarpal joint: abduction of the hand
| Carpometacarpal joint of thumb; abduction
29
Extensor pollicus brevis origin
Radius (posterior surface) and interosseous membrane
30
Extensor pollicus brevis insertion
Base of proximal phalanx of thumb
31
Extensor pollicus brevis action
Radio carpal joint: abduction (radial deviation) of hand
| Carpometacarpal and MCP or thumb; extension
32
Extensor pollicus longus origin
Ulna (posterior surface) and interosseous membrane
33
Extensor pollicus longus insertion
Base of distal phalanx of thumb
34
Extensor pollicus longus action
Wrist: extension and abduction (radial deviation) of hand
| Carpometacarpal of thumb; adduction MCP and IP of thumb: extension
35
Extensor indicis origin
Ulna (posterior surface) and interosseous membrane
36
Extensor indicis insertion
Posterior digital extension of 2nd digit
37
Extensor Indicis action
Wrist:extension
| MCP, PIP, and DIP of 2nd digit; extension
38
Pronator teres origin
Humeral head: medial epicondyle of humerus
| Ulnar head: coronoid process
39
Pronator teres insertion
Lateral radius (distal to supinator insertion)
40
Pronator teres, flexor carpi radialis innervation
Median n. C6-C7
41
Pronator teres action
Elbow: weak flexor
Forearm: pronation
42
Flexor carpi radialis origin
Medial epicondyle of humerus
43
Flexor carpi radialis insertion
Base of 2nd metacarpal (variance: base of 3rd metacarpal)
44
Flexor carpi radialis action
Wrist: flexion and abduction (radial deviation) of hand
45
Palmaris longus origin
Medial epicondyle of humerus
46
Palmaris longus insertion
Palmar aponeurosis
47
Palmaris longus innervation
Median n C7-C8
48
Palmaris longus action
Elbow: weak flexion
Wrist: flexion tightens palmar aponeurosis
49
Flexor carpi ulnaris origin
Humeral head: medial epicondyle
| Ulnar head: olecranon
50
Flexor carpi ulnaris insertion
Pisiform; hook of hamate; base of 5th metacarpal
51
Flexor carpi ulnaris innervation
Ulnar n. C7-T1
52
Flexor carpi ulnaris action
Wrist: flexion and adduction (ulnar deviation ) of hand
53
Flexor digitorum superficialis origin
Humeral-ulnar head: medial epicondyle of humerus
| Radial head: upper half of anterior border of radius
54
Flexor digitorum superficialis insertion
Sides of middle phalanges of 2nd to 5th digits
55
Flexor digitorum superficialis innervation
Median n. C8, T1
56
Flexor digitorum superficialis action
Elbow: weak flexor
Wrist: MCP, and PIP joints of 2nd to 5th digits; flexion
57
Flexor digitorum profundus origin
Ulna ( proximal 2/3 of flexor surface) and interosseous membrane
58
Flexor digitorum profundus insertion
Distal phalanges of 2nd to 5th digits (palmar surface)
59
Flexor digitorum profundus innervation
Median n. C8,T1
| Ulnar n. C8,T1
60
Flexor digitorum profundus action
Wrist, MCP, PIP, and DIP of 2nd to 5th digits; flexion
61
Flexor pollicus longus origin
Radius (midanterior surface ) and adjacent interosseous membrane
62
Flexor pollicus longus insertion
Distal phalanx of thumb (palmar surface)
63
Flexor pollicus longus and pronator quadratus innervation
Median n. C8,T1
64
Flexor pollicus longus action
Wrist: flexion and abduction (radial deviation) of hand
| Carpometacarpal of thumb; flexion MCP and IP of thumb; flexion
65
Pronator quadratus origin
Distal quarter of ulna (anterior surface)
66
Pronator quadratus insertion
Distal quarter of radius (anterior surface)
67
Pronator quadratus action
Hand: pronation
| Distal radioulnar joint: stabilization
68
Adductor pollicus transverse head origin
3rd metacarpal ( palmar surface)
69
Adductor pollicus oblique head origin
Capitate bone; 2nd and 3rd metacarpals (bases)
70
Adductor pollicus, abductor pollicus brevis, and flexor pollicus brevis insertion
Thumb (base of proximal phalanx )
Adductor pollicis: via the ulnar sesamoid
Other two: via the radial sesamoid
71
Adductor pollicis innervation
Ulnar n. C8-T1
72
Adductor pollicis action
CMC joint of thumb;adduction
| MCP joint of thumb; flexion
73
Abductor pollicis brevis origin
Scaphoid bone and trapezium; flexor retinaculum
74
Abductor pollicis brevis innervation
Median n. C8,T1
75
Abductor pollicis brevis action
CMC joint of thumb; abduction
76
Flexor pollicis brevis superficial head origin
Flexor retinaculum
77
Flexor pollicis brevis deep head origin
Capitate bone, trapezium
78
Flexor pollicis brevis superficial head innervation
Median n. C8, T1
79
Flexor pollicis brevis deep head innervation
Ulnar n. C8-T1
80
Flexor pollicis brevis action
CMC joint of thumb; flexion
81
Opponens pollicis origin
Trapezium
82
Opponens pollicis insertion
1st metacarpal (radial border)
83
Opponens pollicis innervation
Median n. C8,T1
84
Opponens pollicis action
CMC Joint of thumb; opposition
85
Opponens digiti minimi and flexor digiti minimi brevis origin
Hook of hamate, flexor retinaculum
86
Opponent digiti minimi insertion
5th metacarpal ulnar border
87
Opponens digiti
Flexor digiti minimi brevis
Abductor digiti minimi
Palmaris brevis
Innervation
Ulnar n. C8-T1
88
Opponens digiti minimi action
Draws metacarpal in palmar direction (opposition )
89
Flexor digiti minimi brevis insertion
5th proximal phalanx (base)
90
Flexor digiti minimi brevis action
MCP joint of little finger; flexion
91
Abductor digiti minimi origin
Pisiform bone
92
Abductor digiti minimi insertion
5th proximal phalanx (ulnar base) and dorsal digital expansion of 5th digit
93
Abductor digiti minimi action
MCP joint of little finger; flexion and abduction of little finger
PIP and DIP joints of little finger; extension
94
Palmaris brevis origin
Palmar aponeurosis (ulnar border)
95
Palmaris brevis insertion
Skin of hypothenar eminence
96
Palmaris brevis action
Tightens the palmar aponeurosis (protective function)
97
1st and 2nd lumbricals origin
Tendons of flexor digitorum profundus radial sides
98
1st lumbricals insertion
2nd digit dde
99
2nd lumbrical insertion
3rd digit dde
100
1st/2nd lumbricals innervation
Median n. C8-T1
101
Lumbricals action
2nd to 5th digits:
MCP joints; flexion
Proximal and distal IP joints; extension
102
3rd/4th lumbricals origin
Tendons of flexor digitorum profundus (biennale from medial and lateral sides)
103
3rd lumbrical insertion
4th digit dde
104
4th lumbrical insertion
5th digit dde
105
3rd/4th lumbrical innervation
Ulnar n. C8-T1
106
Dorsal interossei innervation
Ulnar n. C8-T1
107
1st Dorsal interossei origin
1st and 2nd metacarpals (adj sides, two heads)
108
1st dorsal interossei insertion
2nd digit dde
| 2nd proximal phalanx radial side
109
Dorsal interossei action
2nd to 4th digits:
MCP joints; flexion
Proximal and distal IP joints ;
Extension and abduction from 3rd digit
110
2nd dorsal interossei origin
2nd and 3rd metacarpals (adj sides two heads)
111
2nd dorsal interossei insertion
3rd digit dde
| 3rd proximal phalanx radial side
112
3rd dorsal interossei origin
3rd and 4th metacarpals (adj sides two heads)
113
3rd dorsal interossei insertion
3rd digit dde
| 3rd proximal phalanx ulnar side
114
4th dorsal interossei origin
4th and 5th metacarpals (adj sides two heads)
115
4th dorsal interossei insertion
4th digit dde
| 4th proximal phalanx ulnar side
116
Palmar interossei innervation
Ulnar n. C8-T1
117
Palmar interossei action
2nd, 4th and 5th digits:
MCP joints; flexion
Proximal and distal IP joints
Extension and adduction toward 3rd digit
118
1st palmar interossei origin
2nd metacarpal ulnar side
119
1st palmar interossei insertion
2nd digit dde
| 2nd proximal phalanx base
120
2nd palmar interossei origin
4th metacarpal radial side
121
2nd Palmar interossei insertion
4th digit dde
| 4th proximal phalanx base
122
3rd palmar interossei origin
5th metacarpal radial side
123
3rd palmar interossei insertion
5th digit dde
| 5th proximal phalanx base
