upper limb muscles Flashcards
1
Q
abductor pollicis longus origin
A
posterior surface of upper and middle radius and intervening interosseous membrane
2
Q
abductor pollicis longus insertion
A
radial side of base of metacarpal 1
3
Q
abductor pollicis longus action
A
abduction of 1st CMC
assists extension of 1st CMC
assists abduction of the wrist
4
Q
abductor pollicis longus innervation
A
posterior interosseous nerve
5
Q
anconeus origin
A
lateral epicondyle of humerus (common extensor origin)
6
Q
anconeus insertion
A
olecranon and upper part of ulnar shaft
7
Q
anconeus action
A
extends the elbow
8
Q
anconeus innervation
A
radial nerve
9
Q
brachialis origin
A
distal 1/2 of shaft of humerus
10
Q
brachialis insertion
A
ulna tuberosity
11
Q
brachialis action
A
main flexor of elbow joint
12
Q
brachialis innervation
A
musculocutaneous nerve
13
Q
brachioradialis origin
A
common flexor tendon
14
Q
brachioradialis insertion
A
lateral surface of radius proximal to radial styloid
15
Q
brachioradialis action
A
flexes the elbow when forearm is in mid-prone
returns forearm to mid-prone from full extremities of pronation or supination
16
Q
brachioradialis innervation
A
radial nerve
17
Q
biceps brachii origin
A
short head = coracoid process
long head = supraglenoid tubercle
18
Q
biceps brachii insertion
A
radial tuberosity
19
Q
biceps brachii actions
A
flexion of elbow/shoulder joint
supination of radio-ulnar joint
20
Q
biceps brachii innervation
A
musculocutaneous nerve
21
Q
coracobrachialis origin
A
coracoid process
22
Q
coracobrachialis insertion
A
mid-shaft of humerus
23
Q
coracobrachialis actions
A
weak adductor and flexor of arm
24
Q
coracobrachialis innervation
A
musculocutaneous nerve
25
deltoid origin
anterior = lateral 1/3 clavicle
posterior = spine of scapula
middle = acromion
26
deltoid insertion
mid-shaft humerus
27
deltoid actions
anterior = flexion and MR
posterior = extension and LR
middle = abduction
28
deltoid innervation
axillary nerve
29
extensor carpi radialis brevis origin
common extensor tendon
30
extensor carpi radialis brevis insertion
posterior surface of base of metacarpal 3
31
extensor carpi radialis brevis actions
extension and abduction at wrist
32
extensor carpi radialis brevis innervation
posterior interosseous nerve
33
extensor carpi radialis longus origin
lateral supracondylar ridge of humerus
34
extensor carpi radialis longus insertion
posterior surface of base of metacarpal 2
35
extensor carpi radialis longus action
extension and abduction at wrist
36
extensor carpi radialis longus innervation
radial nerve
37
extensor carpi ulnaris origin
aponeurosis from posterior border of ulna
38
extensor carpi ulnaris insertion
medial side of base of metacarpal 5
39
extensor carpi ulnaris action
extension and adduction at wrist
40
extensor carpi ulnaris innervation
posterior interosseous nerve
41
abductor digiti minimi origin
pisiform, pisohamate, pisometacarpal ligaments, tendon FCU
42
abductor digiti minimi insertion
ulnar side proximal phalnx of little finger and dorsal digital expansion
43
abductor digiti minimi action
abduction of little finger
flexion of MCP
44
abductor digiti minimi innervation
ulnar nerve
45
abductor pollicis brevis origin
flexor retinaculum, scaphoid, trapezium
46
abductor pollicis brevis insertion
radial side of the base of the proximal phalanx of the thumb
47
abductor pollicis brevis action
abduction of the CMC, MCP joint of the thumb
48
abductor pollicis brevis innervation
median nerve
49
adductor pollicis origin
oblique head = scaphoid, trapezoid, tendon FCR, bases of metacarpals 2-3
transverse head = anterior surface shaft of the 3rd metacarpal
50
adductor pollicis insertion
medial side of base of proximal phalanx of thumb
51
adductor pollicis action
strong adductor
52
adductor pollicis innervation
ulnar nerve
53
extensor digiti minimi origin
common extensor tendon
54
extensor digiti minimi insertion
dorsal digital expansion of digit 5
55
extensor digiti minimi action
extension of 5th MCP
assists extension of IP joints
extension of wrist
56
extensor digiti minimi innervation
posterior interosseous nerve
57
extensor digitorum origin
common extensor tendon
58
extensor digitorum insertion
bases of middle and distal phalanges ( dorsal digital expansion)
59
extensor digitorum actions
extension of the MCP joints of each finger
assists extension of the IP joints
60
extensor digitorum innervation
posterior interosseous nerve
61
extensor indicis origin
posterior surface of distal ulna and interosseous membrane
62
extensor indicis insertion
dorsal digital expansion of index finger
63
extensor indicis action
extension of 2nd MCP and IP
64
extensor indicis innervation
posterior interosseous nerve
65
extensor pollicis brevis origin
posterior surface of middle ulna and interosseous membrane
66
extensor pollicis brevis insertion
dorsal surface of base of proximal phalanx of the thumb
67
extensor pollicis brevis action
extension of the thumb at MCP and CMC
68
extensor pollicis brevis innervation
posterior interosseous nerve
69
extensor pollicis longus origin
posterior surface of middle 1/3 of ulna and interosseous membrane
70
extensor pollicis longus insertion
dorsal surface of base of distal phalanx of the thumb
71
extensor pollicis longus action
extension of IP joints of thumb
assists extension at MCP, CMC and wrist
72
extensor pollicis longus innervation
posterior interosseous nerve
73
flexor carpi ulnaris origin
common flexor tendon
medial border of olecranon and posterior border of ulna
74
flexor carpi ulnaris insertion
pisiform, hook of hamate, base of 5th metacarpal
75
flexor carpi ulnaris action
flexion and adduction at wrist
synergic action in abduction of digit 5
76
flexor carpi ulnaris innervation
ulnar nerve
77
flexor carpi radialis origin
common flexor tendon
78
flexor carpi radialis insertion
palmar surface of base of metacarpals 2 and 3
79
flexor carpi radialis action
flexion and abduction at wrist
80
flexor carpi radialis innervation
median nerve
81
flexor digitorum profundus origin
medial side coronoid process, anterior and middle surfaces of ulna and interosseous membrane
82
flexor digitorum profundus insertion
4 tendons to base of palmar surface of distal phalanx of each finger
83
flexor digitorum profundus action
flexion of DIP, PIP and MCP joints of finger
flexion at wrist
84
flexor digitorum profundus innervation
ulnar nerve
anterior interosseous nerve
85
flexor digitorum superficialis origin
common flexor origin and coronoid process of ulna
proximal 2/3 anterior border of radius
86
flexor digitorum superficialis insertion
4 tendons to either side palmar surface of middle phalanx of each finger
87
flexor digitorum superficialis action
flexion at wrist, MCP, PIP
88
flexor digitorum superficialis innervation
median nerve
89
flexor pollicis longus origin
anterior surface of radius and adjacent interosseous membrane
90
flexor pollicis longus insertion
palmar surface base of distal phalanx of the thumb
91
flexor pollicis longus action
flexion at CMC, MCP and Ip joints of thumb
92
flexor pollicis longus innervation
anterior interosseous nerve
93
infraspinatus origin
infraspinous fossa of scapula
94
infraspinatus insertion
middle facet on greater tubercle of humerus
95
infraspinatus action
lateral rotation and adduction of arm
96
infraspinatus innervation
subscapular nerve
97
latissimus dorsi origin
iliac crest
thoracolumbar fascia from SP T6-12 and all lumbar and sacral vertebrae
lower 4 ribs and inferior angle of scapula
98
latissimus dorsi insertion
floor of intertubercular groove
99
latissimus dorsi actions
extension, medial rotation and adduction of humerus
100
latissimus dorsi innervation
thorocodorsal nerve
101
levator scapulae origin
TP C1-4
102
levator scapulae insertion
superior portion of the medial border of the scapula
103
levator scapulae action
elevates, MR scapula
104
levator scapulae innervation
dorsal scapula nerve
105
opponens digiti minimi origin
flexor retinaculum
hook of hamate
106
opponens digiti minimi insertion
shaft of 5th metacarpal
107
opponens digiti minimi action
opposition of digit 5
108
opponens digiti minimi innervation
ulnar nerve
109
opponens pollicis origin
flexor retinaculum
trapezium
110
opponens pollicis insertion
whole length of lateral half of anterior surface of first metacarpal
111
opponens pollicis action
opposition
112
opponens pollicis innervation
median nerve
113
palmaris brevis origin
flexor retinaculum and palmar aponeurosis
114
palmaris brevis insertion
skin of palm into dermis
115
palmaris brevis action
steadies and corrugates skin of palm to help with grip
116
palmaris brevis innervation
ulnar nerve
117
palmaris longus origin
common flexor tendon
118
palmaris longus insertion
flexor retinaculum and palmar aponeurosis
119
palmaris longus action
weak wrist flexion
tightens palmar fascia
120
pectoralis major origin
medial 1/3 of the anterior aspect of the clavicle
Manubrium and sternum and onto costal cartilages
121
122
pectoralis major insertion
lateral lip of the intertubercular groove
123
pectoralis major innervation
medial and lateral pectoral nerves
124
pectoralis major action
flexion, extension, adduction and medial rotation of humerus
125
pectoralis minor origin
ribs 3,4 and 5 and their costal cartilages
126
pectoralis minor insertion
coracoid process of scapula
127
pectoralis minor action
protracts and medially rotates scapula
128
pectoralis minor innervation
pectoral nerve
129
subscapularis origin
subscapular fossa
130
subscapularis insertion
lesser tubercle of humerus
131
subscapularis action
medial rotation of arm
132
subscapularis innervation
subscapular nerve
133
teres major origin
inferior angle of scapula
134
teres major insertion
medial lip of intertubercular groove
135
teres major action
adduction and medial rotation of arm
assists extension of flexed arm
136
teres major innervation
lower scapular nerve
137
pronator quadratus origin
anterior 1/4 of distal radius
138
pronator quadratus insertion
anterior 1/4 of distal ulna
139
pronator quadratus action
pronates forearm
140
pronator quadratus innervation
anterior interosseous nerve
141
pronator teres origin
common flexor origin
142
pronator teres insertion
middle of lateral surface of radius
143
pronator teres action
pronates forearm
assists elbow flexion
144
pronator teres innervation
median nerve
145
rhomboids origin
C7 and T1 spinous process and supraspinous ligament
T2-5
146
rhomboids insertion
medial border of spine of scapula
medial border inferior to the spine of the scapula
147
rhomboids action
retraction and medial rotation of scapula
148
rhomboids innervation
dorsal scapula nerve
149
subclavius origin
costochondral junction of 1st rib
150
subclavius insertion
inferior surface of the clavicle
151
subclavius action
steadies the clavicle
152
subclavius innervation
subclavian nerve
153
supinator origin
lateral epicondyle of humerus
radial collateral and annular ligaments
crest of ulna
supinator fossa
154
supinator insertion
lateral, posterior and anterior surface of proximal 1/3 of radius
155
supinator action
supinates forearm
156
supinator innervation
radial nerve
157
supraspinatus origin
supraspinous fossa
158
supraspinatus insertion
uppermost facet on greater tubercle of humerus
159
supraspinatus action
assists abduction, initiating first 20 degrees
160
supraspinatus innervation
suprascapular nerve
