Muscles WQ24 Flashcards
(150 cards)
1
Q
what is the action of the masseter?
A
- elevates the mandible of the jaw
- closes jaw
2
Q
where does the masseter originate?
A
zygomatic arch
3
Q
where does the masseter insert?
A
ramus of mandible
4
Q
what is the action of sternocleidomastoid?
A
- flexion of the head at the neck
- lateral flexion of head at shoulder
5
Q
where does the sternocleidomastoid originate?
A
- sternal end of clavicle
- manubrium of sternum
6
Q
where does the sternocleidomastoid insert?
A
mastoid process of temporal bone
7
Q
what is the action of the splenius?
A
- extension/hyperextension of head
- rotation of head
- flexion of head
8
Q
where does the splenius originate?
A
- spinous processes
- cervical & thoracic vertebrae
9
Q
what is the action of the trapezius?
A
- elevation of the shoulders
- extends & hyperextends head
10
Q
where does the trapezius originate?
A
spinous process of cervical & thoracic vertebrae
11
Q
where does the trapezius insert?
A
- clavicle
- acromion process of scapula
- spine of scapula
12
Q
what is the action of the rhomboids (major & minor)
A
- retraction of scapula at shoulders
13
Q
where do the rhomboids originate?
A
spinous process of cervical and thoracic vertebrae
14
Q
where do the rhomboids insert?
A
medial border of scapula
15
Q
what is the action of the pectoralis minor?
A
protraction of the scapula at shoulder (downward)
- downward rotation of scapula
16
Q
where does the pectoralis minor originate?
A
ribs (anterior and superior margins)
17
Q
where does the pectoralis minor insert?
A
(anterior surface of) vertebral border of scapula
18
Q
what is the action of the serratus anterior?
A
- protraction of scapula at the shoulder
- upward rotation of scapula
19
Q
what is the action of the deltoid?
A
abduction of the arm at shoulder
20
Q
where does the deltoid originate?
A
- clavicle
- acromion and spine of scapula
21
Q
where does the deltoid insert?
A
deltoid tuberosity of humerus
22
Q
what is the action of the supraspinatus?
A
abduction of arm at shoulder
23
Q
where does the supraspinatus originate?
A
supraspinous fossa of scapula
24
Q
where does the supraspinatus insert?
A
greater tubercle of humerus
25
what is the action of the subscapularis?
medial rotation of arm at shoulder
26
where does the subscapularis originate?
subscapular fossa of scapula
27
where does the subscapularis insert?
lesser tubercle of humerus
28
what is the action of the teres major?
- extension of arm at shoulder
- adduction of arm at shoulder
29
where does the teres major originate?
inferior angle of scapula
30
where does the teres major insert?
intertubercular groove of humerus
31
what is the action of the teres minor?
lateral rotation of arm at shoulder
32
where does the teres minor originate?
lateral border of scapula
33
where does the teres minor insert?
greater tubercle of humerus
34
what is the action of the infraspinatus?
lateral rotation of arm at shoulder
35
where does the infraspinatus originate?
infraspinous fossa of scapula
36
where does the infraspinatus insert?
greater tubercle of humerus
37
what is the action of the coracobrachialis?
- flexion of arm at shoulder
- abduction of arm at shoulder
38
where does the coracobrachialis originate?
coracoid process of scapula
39
where does the coracobrachialis insert?
medial shaft of humerus
40
what is the action of the pectoralis major?
- flexion of arm at shoulder
- abduction of arm at shoulder
41
where does the pectoralis major originate?
cartilages of ribs, manubrium, body of sternum, medial clavicle
42
where does the pectoralis major insert?
- greater tubercle
- intertubercular groove of humerus
43
what is the action of the latissimus dorsi?
- extension of arm at shoulder
- adduction of arm at shoulder
- medial rotation of arm at shoulder
44
where does the latissimus dorsi originate?
- spinous process of inferior thoracic and all lumbar vertebrae
- ribs
45
where does the latissimus dorsi insert?
intertubercular groove of humerus
46
what is the action of the triceps brachii?
- extension of forearm at elbow
- (long head) extension and adduction of arm at shoulder
47
where does the triceps brachii originate?
- humerus (lateral and posterior surface)
- scapula (below the glenoid cavity)
48
where does the triceps brachii insert?
olecranon process of the ulna
49
what is the action of the biceps brachii?
- flexion of forearm at elbow
- supination of forearm
- flexion of arm at shoulder
50
where does the biceps brachii originate?
- coracoid process of scapula
- scapula (above glenoid cavity)
51
where does the biceps brachii insert?
radial tuberosity
52
what is the action of the brachialis?
flexion of forearm at elbow
53
where does the brachialis originate?
humerus (anterior, distal surface)
54
where does the brachialis insert?
tuberosity of ulna
55
what is the action of the extensor carpi radialis brevis?
- extension of hand at wrist
- abduction of hand at wrist
56
where does the extensor carpi radialis brevis originate?
lateral epicondyle of humerus
57
where does the extensor carpi radialis brevis insert?
metacarpal
58
what is the action of the extensor carpi ulnaris?
- extension of hand at wrist
- adduction of hand at wrist
59
where does the extensor carpi ulnaris originate?
lateral epicondyle of humerus
60
where does the extensor carpi ulnaris insert?
metacarpal
61
what is the action of the extensor digitorum?
extends at phalanges
62
where does the extensor digitorum originate?
lateral epicondyle of humerus
63
where does the extensor digitorum insert?
phalanges
64
what is the action of the flexor carpi radialis?
- flexes hand at wrist
- abducts hand at wrist
65
where does the flexor carpi radialis originate?
medial epicondyle of humerus
66
where does the flexor carpi radialis insert?
metacarpal
67
what is the action of the flexor carpi ulnaris?
- flexion of hand at wrist
- adduction of hand at wrist
68
where does the flexor carpi ulnaris originate?
medial epicondyle of humerus
69
where does the flexor carpi ulnaris insert?
metacarpal
70
what is the action of the flexor digitorum superficialis?
flexion at the phalanges
71
where does the flexor digitorum superficialis originate?
- medial epicondyle of humerus
72
where does the flexor digitorum superficialis insert?
middle phalanges
73
what is the action of the rectus abdominis?
- depression of ribs
- flexion of vertebral column/torso
- abdominal compression
74
where does the rectus abdominis originate?
pubic crest
75
where does the rectus abdominis insert?
- ribs
- xiphoid process of sternum
76
what is the action of the external obliques?
- flexion of the vertebral column
- rotation of the vertebral column
- abdominal compression
77
where does the external obliques originate?
ribs
78
where does the external obliques insert?
- linea alba
- iliac crest
79
what is the action of the internal oblique?
- flexion of vertebral column
- rotation of vertebral column
- abdominal compression
80
where does the internal oblique originate?
iliac crest
81
where does the internal oblique insert?
- ribs
- linea alba
82
what is the action of the transverse abdominis?
abdominal compression
83
where does the transverse abdominis originate?
- ribs
- iliac crest
84
where does the transverse abdominis insert?
- xiphoid process of sternum
- pubic crest
- linea alba
85
what is the action of the gluteus maximus?
- extension of thigh at hip
- lateral rotation of thigh at hip
86
where does the gluteus maximus originate?
- ilium
- sacrum
- coccyx
87
where does the gluteus maximus insert?
linea aspera of femur
88
what is the action of the gluteus medius?
abduction of thigh at hip
89
where does the gluteus medius originate?
- iliac crest
- outer surface of the ilium
90
where does the gluteus medius insert?
greater trochanter of the femur
91
what is the action of the tensor fasciae latae?
- flexion of thigh at hip
- abduction of thigh at hip
- medial rotation of thigh at hip
92
where does the tensor fasciae latae originate?
anterior superior iliac spine
93
where does the tensor fasciae latae insert?
lateral condyle of tibia
94
what is the action of the adductors?
adduction of thigh at hip
95
where do the adductors originate?
- inferior ramus of pubis
- ischial tuberosity
96
where do the adductors insert?
linea aspera of femur
97
what is the action of the iliacus?
flexion of thigh at hip
98
where does the iliacus originate?
iliac fossa
99
where does the iliacus insert?
lesser trochanter of the femur
100
what is the action of the psoas major?
flexion of thigh at hip
101
where does the psoas major originate?
transverse processes of lumbar vertebrae
102
where does the psoas major insert?
lesser trochanter of femur
103
what is the action of the gracilis?
adduction of thigh at hip
104
where does the gracilis originate?
inferior ramus of pubis
105
where does the gracilis insert?
tibia (proximal, medial)
106
what is the action of the sartorius?
- lateral rotation of thigh at hip
- flexion of thigh at hip and leg at knee
107
where does the sartorius originate?
anterior superior iliac spine
108
where does the sartorius insert?
tibia (anterior, medial)
109
what is the action of the rectus femoris?
extension of leg at knee
110
where does the rectus femoris originate?
anterior inferior iliac spine
111
where does the rectus femoris insert?
tibial tuberosity of tibia
112
what is the action of the biceps femoris?
flexion of leg at knee
113
where does the biceps femoris originate?
- ischial tuberosity
- linea aspera of femur
114
where does the biceps femoris insert?
- head of fibula
- lateral condyle of tibia
115
what is the action of the semimembranosus?
flexion of leg at knee
116
where does the semimembranosus originate?
ischial tuberosity
117
where does the semimembranosus insert?
medial condyle of tibia
118
what is the action of the semitendinosus?
flexion of leg at knee
119
where does the semitendinosus originate?
ischial tuberosity
120
where does the semitendinosus insert?
tibia (proximal, medial)
121
what is the action of the vastus lateralis?
extension of leg at knee
122
where does the vastus lateralis originate?
linea aspera of femur
123
where does the vastus lateralis insert?
tibial tuberosity of tibia
124
what is the action of the vastus intermedius?
extension of leg at knee
125
where does the vastus intermedius originate?
linea aspera of femur
126
where does the vastus intermedius insert?
tibial tuberosity of tibia
127
where does the vastus medialis insert?
tibial tuberosity of tibia
128
what is the action of the vastus medialis?
extension of leg at knee
129
where does the vastus medialis originate?
linea aspera of femur
130
what is the action of the gastrocnemius?
plantar flexion (extension of foot at ankle)
131
where does the gastrocnemius originate?
medial and lateral condyles of femur
132
where does the gastrocnemius insert?
calcaneus
133
what is the action of the soleus?
plantar flexion (extension of foot at ankle)
134
where does the soleus originate?
- head and shaft of fibula
- shaft of tibia
135
where dose the soleus insert?
calcaneus
136
what is the action of the tibialis anterior?
- dorsiflexion (flexion of foot at ankle)
- inversion of foot
137
where does the tibialis anterior originate?
lateral condyle and shaft of tibia
138
where does the tibialis anterior insert?
metatarsal and medial cuneiform
139
what is the action of the flexor digitorum longus?
flexion of toes
140
where does the flexor digitorum longus originate?
tibia (posterior, medial)
141
where does the flexor digitorum longus insert?
distal phalanges
142
what is the action of the fibularis longus/peroneus?
eversion of foot
143
where does the fibularis longus originate?
head & shaft of fibula
144
where does the fibularis longus insert?
metatarsal and medial cuneiform
145
what is the action of the fibularis tertius/peroneus?
eversion of foot
146
where does the peroneus tertius originate?
fibula (medial, anterior surface)
147
where does the peroneus tertius insert?
metatarsal
148
what is the action of the extensor digitorum longus?
extension at toes
149
where does the extensor digitorum longus originate?
lateral condyle of tibia and fibula
150
where does the extensor digitorum longus insert?
middle and distal phalanges
