Muscles Flashcards
0
Q
What is the innervation of biceps brachii?
A
Musculocutaneous nerve
1
Q
What are the attachments of biceps brachii?
A
Proximal : short head - tip of coracoid process
long head - supraglenoid tubercle of scapular
Distal : tuberosity of radius and fascia of forearm
2
Q
What is the action of biceps brachii?
A
Supinates forearm
Flexes forearm
3
Q
What is the innervation of caracobrachialis?
A
Musculocutaneous
4
Q
What is the action of caracobrachialis?
A
Flex and adducts the arm
5
Q
What is the innervation of brachialis?
A
Musculocutaneous nerve
And partially radial nerve
6
Q
What is the innervation of triceps brachii?
A
Radial nerve
7
Q
What is the action of triceps brachii?
A
Extends forearm
8
Q
What is the innervation of anconeus?
A
Radial nerve
9
Q
What is the action of anconeus?
A
Assists triceps in extending forearm
10
Q
What is the innervation of pronator teres?
A
Median nerve
11
Q
What is the action of pronator teres?
A
Pronator and flexes forearm
12
Q
What is the innervation of flexor carpi radialis?
A
Median nerve
13
Q
What is the action of flexor carpi radialis?
A
Flexes hand
Radial deviates the wrist
14
Q
What is the innervation of palmaris longus?
A
Median nerve
15
Q
What is the action of palmaris longus?
A
Flexes hand
16
Q
What is the innervation of flexor carpi ulnaris?
A
Ulnar nerve
17
Q
What is the action of flexor carpi ulnaris?
A
Flexes hand
Ulnar deviates wrist
18
Q
What is the innervation of flexor digitorum superficialis?
A
Median nerve
19
Q
What is the action of flexor digitorum superficialis?
A
Flexes the fingers at the middle phalanges
20
Q
What is the innervation of flexor digitorum profundus?
A
Medial half - ulnar nerve
Lateral half - median nerve
21
Q
What is the action of flexor digitorum profundus?
A
Flexes the fingers at the distal interphalangeal joints
22
Q
What is the innervation of flexor pollicis longus?
A
Median nerve
23
Q
What is the action of flexor pollicis longus?
A
Flexes thumb
24
What is the innervation of pronator quadratus?
Median nerve
25
What is the action of pronator quadratus?
Pronates forearm
| Binds radius and ulna together
26
What is the innervation of brachioradialis?
Radial nerve
27
What is the action of brachioradialis?
Weak flexion of the forearm
28
What is the innervation of extensor carpi radialis longus?
Radial
29
What is the innervation of extensor carpi radialis brevis?
Radial
30
What is the innervation of extensor digitorum?
Radial
31
What isa the innervation of extensor digiti minimi?
Radial
32
What is the innervation of extensor carpi ulnaris?
Radial
33
What is the innervation of supinator?
Radial nerve
34
What is the innervation of abductor pollicis longus?
Radial
35
What is the innervation of extensor pollicis brevis?
Radial
36
What is the innervation of extensor pollicis longus?
Radial
37
What is the innervation of extensor indicis?
Radial
38
What is the innervation of pectoralis major?
Medial and lateral pectoral nerves
39
What is the action of pectoralis major?
Addiction of arm
Internal rotation of arm
Flexion of arm
40
What is the innervation of pectoralis minor?
Medial pectoral nerve
41
What is the action of pectoralis minor?
Pulls scapula medially, anteriorly and inferiorly
42
What is the innervation of subclavius?
Subclavian nerve
43
What is the action of subclavius?
Draws clavicle anteriorly and inferiorally
44
What is the innervation of serrated anterior?
Long thoracic nerve
45
What is the action of serratus anterior?
Protracts and rotates scapula
46
What is the innervation of Trapezius?
Accessory nerve
47
What is the action of trapezius?
Superior part - Elevates scapula
Middle part - Retracts scapula
Inferior part - Depresses scapula
48
What is the innervation of latissimus dorsi?
Thoraco dorsal nerve
49
What is the action of latissimus dorsi?
Adducts humerus
Extends arm
Medially rotates humerus
50
What is the innervation of rhomboids major and minor?
Dorsal scapular nerve
51
What is the action of rhomboids major and minor?
Retracts scapula
| Rotates scapula
52
What is the action of levator scaupulae?
Elevates scapula
| Rotates scapula
53
What is the innervation of deltoid?
Axillary nerve
54
What is the action of deltoid?
Anterior fibres - Flexion of arm
Middle fibres - abducts arm
Posterior fibres - extends arm
55
What is the innervation of teres major?
Subscapular nerve
56
What is the action of teres major?
Adducts arm
| Medially rotates arm
57
What is the innervation of supraspinatus?
Suprascapular nerve
58
What is the action of supraspinatus?
Initiation and 0-15 degrees of abduction
59
What is the innervation of infraspinatus?
Suprascapular nerve
60
What is the action of infraspinatus?
Lateral rotation of the arm
61
What is the innervation of teres minor?
Axillary nerve
62
What is the action of teres minor?
Lateral rotation of the arm
| Weak adductor
63
What is the innervation of subscapularis?
Upper and lower subscapular nerves
64
What is the action of subscapularis?
Medial rotation of the arm
65
What is the innervation of flexor pollicis brevis?
Median nerve
66
What is the innervation of abductor pollicis brevis?
Median nerve
67
What is the innervation of opponens pollicis?
Median nerve
68
Name the three hypothenar muscles
Flexor digiti minimi brevis
Abductor digiti minimi
Opponens digiti minimi
69
What is the innervation the the hypothenar muscles?
Ulnar nerve
70
What is the innervation of the lumbricals?
Medial lumbricals - ulnar nerve
| Lateral lumbricals - median nerve
71
What is the action of the lumbricals?
Flex at the MCP
| Extend the IP joints
72
What is the innervation of the dorsal interossei muscles?
Ulnar nerve
73
What is the action of the dorsal interossei?
Abducts the fingers
74
What is the innervation of palmar interossei?
Ulnar nerve
75
What is the action of palmar interossei?
Adducts fingers
76
What is the innervation and action of palmaris brevis?
Ulnar nerve
| Wrinkles the skin to improve grip
77
What is the innervation and action of adductor pollicis?
Ulnar nerve
| Adducts thumb
78
What are the attachments of the flexor retinaculum?
Medially - Pisiform and the hook of hamate
| Laterally - scaphoid and trapezium
79
What is the innervation of pectineus?
Femoral nerve
80
What is the action of pectineus
Adducts thigh
Flexes thigh
Medially rotates thigh
81
What is the innervation of Psoas Minor and Major?
Anterior rami of lumbar nerves
82
What is the action of Psoas Major and Minor?
Flex thigh
83
What is the innervation of iliacus?
Femoral nerve
84
What is the action of iliacus?
Flex thigh
85
What is the innervation of sartorius?
Femoral nerve
86
What is the innervation of rectus femoris?
Femoral nerve
87
What is the action of rectus femoris?
Extend the leg at the knee
88
What is the innervation of vastus lateralis?
Femoral nerve
89
What is the action of vastus lateralis?
Extend the leg at the knee
90
What is the innervation of vastus medialis?
Femoral nerve
91
What is the action of vastus medialis?
Extend the leg at the knee
92
What is the innervation of vastus intermedius?
Femoral nerve
93
What is the action of vastus intermedius?
Extend the leg at the knee
94
What is the innervation of obturator externus?
Obturator
95
What is the action of obturator externus?
Laterally rotates thigh
96
What is the innervation of adductor brevis?
Obturator nerve
97
What is the action of adductor brevis?
Adducts thigh
98
What is the innervation of adductor longus?
Obturator
99
What is the action of adductor longus?
Adducts thigh
100
What is the innervation of gracilis?
Obturator
101
What is the action of gracilis?
Adducts thigh
Flexes leg
Rotates leg medially
102
What is the action of adductor magnus?
Adducts thigh
Flexes thigh
Extends thigh
103
What is the innervation of adductor magnus?
Obturator
| Sciatic
104
What is the innervation of gluteus maximus?
Inferior gluteal nerve
105
What is the action of gluteus maximus?
Extends thigh
Laterally rotates thigh
Assists with standing from sitting position
106
What is the innervation of tensor fasciae latae?
Superior gluteal nerve
107
What is the action of tensor fasciae latae?
Abduct thigh
Medially rotates thigh
Keeps pelvis level when walking
108
What is the innervation of gluteus medius?
Superior gluteal nerve
109
What is the action of gluteus medius?
Abduct thigh
Medially rotates thigh
Keeps pelvis level when walking
110
What is the innervation of gluteus minimus?
Superior gluteal nerve
111
What is the action of gluteus minimus?
Abduct and medially rotate thigh
| Keeps pelvis level when walking
112
What is the innervation of piriformis?
Branches of S1 and S2
113
What is the action of piriformis?
Laterally rotate extended thigh
| Abduct flexed thigh
114
What is the innervation of obturator internus?
Nerve to obturator internus
115
What is the action of obturator internus?
Laterally rotate extended thigh
| Abduct flexed thigh
116
What is the innervation of the superior and inferior gamelli?
Superior - nerve to obturator internus
| Inferior - nerve to quadratus femoris
117
What is the innervation of quadratus femoris?
Nerve to quadratus femoris
118
What is the action of quadratus femoris?
Laterally rotates thigh
119
What is the innervation of semitendinosus?
Tibial nerve
120
What is the action of semitendinosus?
Extend thigh
Flex leg
Rotate leg medially
121
What is the innervation of semimembranosus?
Tibial nerve
122
What is the action of semimembranosus?
Extend thigh
Flex leg
Rotate leg medially
123
What is the innervation of biceps femoris?
Long head - Tibial nerve
| Short head - Common fibular nerve
124
What is the action of biceps femoris?
Flexes leg
Rotates thigh laterally
Extends thigh
125
What is the innervation of tibialis anterior?
Deep fibular nerve
126
What is the action of tibialis anterior?
Dorsiflexion of the ankle
| Inverts foot
127
What is the innervation of extensor digitorum longus?
Deep fibular nerve
128
What is the action of extensor digitorum longus?
Extends digits of the foot
| Dorsiflexion of ankle
129
What is the innervation of extensor hallucis longus?
Deep fibular nerve
130
What is the action of extensor hallucis longus?
Extends great toe
| Dorsiflexion of ankle
131
What is the innervation of fibularis brevis?
Superficial fibular nerve
132
What is the action of fibularis brevis?
Everts foot
133
What is the innervation of fibularis longus?
Superficial fibular nerve
134
What is the action of fibularis longus?
Everts foot
135
What is the innervation of gastrocnemius?
Tibial nerve
136
What is the action of gastrocnemius?
Plantarflexion of ankle
| Flexion of knee
137
What is the innervation of soleus?
Tibial nerve
138
What is the action of soleus?
Plantarflexion at ankle
139
What is the innervation of plantaris?
Tibial nerve
140
What is the action of plantaris?
Assists in plantarflexion of ankle
141
What is the innervation of popliteus?
Tibial nerve
142
What is the action of popliteus?
Laterally rotates the femur, unlocking the knee joint allowing it to be flexed
143
What is the innervation of tibialis posterior?
Tibial nerve
144
What is the action of tibialis posterior?
Plantarflexion of ankle
| Inverts foot
145
What is the innervation of flexor hallucis longus?
Tibial nerve
146
What is the action of flexor hallucis longus?
Flexes big toe
| Plantarflexion of the ankle
147
What is the innervation of flexor digitorum longus?
Tibial nerve
148
What is the action of flexor digitorum longus?
Flexes lateral 4 digits
| Plantarflexes ankle
