Quiz 2 Flashcards
1
Q
origin of biceps brachii long head
A
supraglenoid tubercle of humerus
2
Q
origin of biceps brachii short head
A
coracoid process of scapula
3
Q
insertion of biceps brachii long + short head
A
radial tuberosity + bicipital aponeurosis
4
Q
innervation of biceps brachii
A
musculocutaneous n
5
Q
spinal levels of biceps brachii
A
C5/C6
6
Q
action of biceps brachii long head
A
forearm flexor, primary supinator, stabilizes the GH joint
7
Q
origin of coracobrachialis
A
coracoid process, scapula
8
Q
insertion of coracobrachialis
A
medial/middle humerus
9
Q
innervation of coracobrachialis
A
musculocutaneous n
10
Q
action of coracobrachialis
A
flexes + adducts humerus at GH joint
11
Q
spinal levels of coracobrachialis
A
C6/C7
12
Q
origin of brachialis
A
distal half of anterior humerus
13
Q
insertion of brachialis
A
ulnar tuberosity + anterior surface of coronoid process
14
Q
innervation of brachialis m
A
musculocutaneous n
15
Q
action of brachialis
A
primary elbow flexor
16
Q
spinal level of brachialis
A
C5/C6
17
Q
origin of tricpes brachii long head
A
infraglenoid tubercle of scapula
18
Q
origin of tricpes brachii lateral head
A
posterolateral surface of humerus + lateral intermuscular septum
19
Q
origin of tricpes brachii medial head
A
posteromedial surface of humerus + medial intermuscular septum
20
Q
insertion of all heads of tricpes brachii
A
olecranon process of the ulna
21
Q
innervation of tricpes brachii
A
radial n
22
Q
spinal levels of tricpes brachii
A
C6/C7/C8
23
Q
actions of tricpes brachii
A
extends forearm at elbow
24
Q
actions of tricpes brachii long head
A
stabilizes the GH joint + extends humerus at GH joint
25
origin of flexor carpi radialis
medial epicondyle
26
insertion of flexor carpi radialis
base of 2nd + 3rd metacarpal
27
action of flexor carpi radialis
flexes carpometacarpal joint + the hand at wrist. abduction. helps steady hand
28
innervation of flexor carpi radialis
median n
29
spinal levels of flexor carpi radialis
C6/C7
30
origin of pronator teres humeral head
medial epicondyle
31
origin of pronator teres ulnar head
coronoid process
32
insertion of pronator teres
mid/lateral surface of radius
33
spinal levels of pronator teres
C6/C7
34
action of pronator Teres
weak pronation of forearm, rotation of radius on ulna
35
Origin of palmaris longus
Medial epicondyle of humerus
36
Insertion of palmaris longus
Flexor retinaculum +palmar aponeurosis
37
Innervation of palmaris longus
Median n
38
Spinal levels of palmaris longus
C7/C8
39
Actions of palmaris longus
Tenses palmar aponeurosis + wearily flexes the wrist
40
Origin of flexor carpi ulnaris
Medial epicondyle, medial olecranon process, posterior border ulna
41
Insertion of flexor carpi ulnaris
Pisiform, hamate, base of 5th metacarpal
42
Innervation of flexor carpi ulnaris
Ulnar n
43
Spinal levels of flexor carpi ulnaris
C7/C8
44
Actions of flexor carpi ulnaris
Flexes carpometacarpal joint, ulnar deviation (adduction), steadies the wrist
45
Origin of flexor digitorum superficialis humeroulnar head
Medial epicondyle, coronoid process of ulna
46
Origin of flexor digitorum superficialis radial head
Anterior surface of radius, distal to the radial tuberosity
47
Insertion of flexor digitorum superficialis
4 tendons split to attach the medial and lateral sides of the bases of the middle phalanges digits 2-5
48
Innervation of flexor digitorum superficialis
Median n
49
Spinal levels of flexor digitorum superficialis
C7/C8/T1
50
Action of flexor digitorum superficialis
Flexes proximal + middle interphalangeal joints and the metacarpophalangeal joints. POWER GRIP MUSCLE
51
Origin of flexor digitorum profundus
Upper 3/4 of the anterior medial ulna + ulnar 1/2 of interosseous membrane
52
Insertion of flexor digitorum profundus
4 tendons pierce the tendons of FDS at bases of middle phalanges to insert at bases of distal phalanges of digits 2-5
53
Innervation of flexor digitorum profundus
Anterior interosseous n + ulnar n
54
Spinal levels of flexor digitorum profundus
C8/T1
55
Action of flexor digitorum profundus
Flexes the distal interphalangeal joints (DIPs), gentle grip flexor. Weak wrist flexor
56
Origin of flexor pollicis longus
Anterior surface of radius + interosseous membrane
57
Insertion of flexor pollicis longus
Base of distal phalanx of thumb
58
Innervation of flexor pollicis longus
Anterior interosseous n
59
Spinal levels of flexor pollicis longus
C7/C8/T1
60
Actions of flexor pollicis longus
Flexes interphalangeal joints + metacarpophalangeal joint of thumb
61
Origin of pronator quadratus
Distal 1/4 anterior surface of ulna
62
Insertion of pronator quadratus
Distal 1/4 anterior surface of radius
63
Innervation of pronator quadratus
Anterior interosseous n
64
Action of pronator quadratus
Pronation of forearm
65
Spinal levels of pronator quadratus
C8/T1
66
Medial border of cubital fossa
Pronator Teres m
67
Lateral border of cubital fossa
Brachioradialis m
68
“Roof” border of cubital fossa
Bicipital aponeurosis
69
“Floor” border of cubital fossa
Brachialis t
70
What runs through the cubital fossa?
brachial v, median n, brachial a,
around: cephalic v, lateral antebrachial cutaneous n, median antebrachial v, basilic v, medial antebrachial cutaneous n, median cubital v
71
Origin of the anconeus m
Lateral epicondyle of humerus
72
Insertion of anconeus m
Lateral olecranon & shaft of the ulna
73
Innervation of anconeus m
Radial n
74
Spinal levels of anconeus m
C7/C8/T1
75
Action of anconeus m
Assists triceps brachii in extending joint capsule of the elbow during extension of the forearm
76
Boundaries of cubital tunnel
olecranon process, medial epicondyle
77
Origin of brachioradialis m
Upper 2/3rd of the lateral supracondylar ridge of the humerus
78
Insertion of brachioradialis m
Lateral aspect of the styloid process of the radius
79
Innervation of brachioradialis m
Radial n
80
Spinal levels of brachioradialis m
C5/C6/C7
81
Action of brachioradialis m
Flexes a semi prone forearm
82
Origin of extensor carpi radialis longus m
Lower 1/3rd of lateral supracondylar ridge of humerus
83
Insertion of extensor carpi radialis longus m
Base of 2nd metacarpal
84
Innervation of extensor carpi radialis longus m
Radial n
85
Spinal levels of extensor carpi radialis longus m
C6/C7
86
Action of extensor carpi radialis longus m
Extend the wrist. Abducts hand when acting with flexor carpi radialis
87
Origin of extensor carpi radialis brevis m
Lateral epicondyle humerus
88
Insertion of extensor carpi radialis brevis m
Base of 3rd metacarpal
89
Innervation of extensor carpi radialis brevis m
Deep branch radial n
90
Spinal levels of extensor carpi radialis brevis m
C7/C8
91
Action of extensor carpi radialis brevis m
Assists extensor carpi radialis longus to extend wrist
92
What are the fleshy 3?
brachioradialis, extensor carpi radialis longus (ECRL), + extensor carpi radialis brevis (ECRB)
93
Origin of extensor digitorium m
Lateral epicondyle of humerus
94
Insertion of extensor digitorium m
Dorsal aspects of middle + distal phalanges, digits 3-4
95
Innervation of extensor digitorium m
Posterior interosseous n
96
Spinal levels of extensor digitorium m
C7/C8
97
Action of extensor digitorium m
Extends metacarpal phalangeal + interphalangeal joints digits 3-4
98
Origin of extensor digitorium minimum m
Medial belly of extensor digitorum
99
Insertion of extensor digitorium minimum m
Dorsal digital expansions of the little finger via 1-2 tendons
100
Innervation of extensor digitorium minimum m
Posterior interosseous n
101
Spinal levels of extensor digitorium minimum m
C7/C8
102
Action of extensor digitorium minimum m
Assists extensor digitorum at 5th digit
103
Origin of extensor carpi ulnaris m
Lateral epicondyle of humerus
104
Insertion of extensor carpi ulnaris m
Medial side base of 5th metacarpal
105
Innervation of extensor carpi ulnaris m
Posterior interosseous n
106
Spinal levels of extensor carpi ulnaris m
C7/C8
107
Action of extensor carpi ulnaris m
Adduct (ulnar deviate) hand. Fix the wrist. Extend the wrist
108
Origin of supinator m
Lateral epicondyle humerus, collateral ligament + supinator crest of ulna
109
Insertion of supinator m
Lateral surface, proximal 1/3rd of radius
110
Innervation of supinator m
Deep branch radial n
111
Spinal levels of supinator m
C7/C8
112
Action of supinator m
Supinates forearm from pronated position
113
Origin of abductor pollicis longus
Posterior surfaces of radius, ulna, + interosseous membrane
114
Insertion of abductor pollicis longus
Base of 1st metacarpal + trapezium
115
Innervation of abductor pollicis longus
Posterior interosseous n
116
Spinal levels of abductor pollicis longus
C7/C8
117
Action of abductor pollicis longus
Abducts + extends thumb
118
Origin of extensor pollicis brevis
Posterior surface of radius + interosseous membrane
119
Insertion of extensor pollicis brevis
Base of proximal phalanx of thumb
120
Innervation of extensor pollicis brevis
Posterior interosseous n
121
Spinal levels of extensor pollicis brevis
C7/C8
122
Action of extensor pollicis brevis
Extends metacarpophalangeal joint + carpometacarpal joint of thumb
123
Origin of extensor pollicis longus
Posterior shaft of ulnar + interosseous membrane
124
Insertion of extensor pollicis brevis
Base of distal phalanx (thumb)
125
Innervation of extensor pollicis brevis
Posterior interosseous n
126
Spinal levels of extensor pollicis brevis
C7/C8
127
Action of extensor pollicis brevis
Extends thumb at interphalangeal + metacarpophalangeal joints
128
Origin of extensor indicis
Posterior surface of interosseous membrane + posterior surface of ulna
129
Insertion of extensor indicis
Dorsal digital expansions of index finger
130
Innervation of extensor indicis
Posterior interosseous n
131
Spinal levels of extensor indicis
C7/C8
132
Action of extensor indicis
Extends index finger, assisting extensor digitorum
133
Medial border of anatomical snuff box
Extensor pollicis longus
134
Lateral borders of anatomical snuff box
Extensor pollicis brevis + abductor pollicis longus
135
what are the fleshy 3 muscles?
brachioradialis, extensor carpi radialis longus, + extensor carpi radialis brevis
136
cubital tunnel contents
ulnar n
137
carpal tunnel contents
flexor digitorium profundus t (4), flexor digitorium superficialis t (4), median n, flexor pollicis longus t,
138
arcade of frohse
common site of deep radial nerve entrapment
139
carpal tunnel "roof"
flexor retinaculum
140
carpal tunnel lateral border
scaphoid + trapezium tubercle
141
carpal tunnel medial border
hook of hamate + pisiform
142
carpal tunnel "floor"
palmar ulnocarpal +radiocarpal ligaments, + carpal bones
