Muscle Actions Flashcards
1
Q
orbicularis oculi action
A
closes eyelids
2
Q
levator palpebrae superioris action
A
elevation of upper lip
3
Q
orbicularis oris action
A
closes & protrudes lips
4
Q
zygomaticus major action
A
elevates corners of mouth
5
Q
zygomaticus minor action
A
elevation of upper lips
6
Q
buccinator action
A
compression of cheek
7
Q
occipitofrontalis action
A
elevates eyebrows, wrinkles forehead, moves scalp
8
Q
risorius action
A
draws mouth corners laterally
9
Q
superior rectus action
A
elevates & medially moves the eyes
10
Q
inferior rectus action
A
depresses & medially moves the eyes
11
Q
lateral rectus action
A
outward/lateral movement of eyes
12
Q
medial rectus action
A
inward/medial movement of eyes
13
Q
superior oblique action
A
depresses & laterally moves the eyes
14
Q
inferior oblique action
A
elevates & medially moves the eyes
15
Q
masseter action
A
elevates & retracts mandible
16
Q
temporalis action
A
elevates & retracts mandible
17
Q
medial pterygoid action
A
elevates & protracts mandible
18
Q
lateral pterygoid action
A
protracts mandible
19
Q
digastric action
A
opens the mouth and elevates hyoid bone
20
Q
sternocleidomastoid action
A
flexes the cervical vertebrae
21
Q
semispinalis capitis action
A
extends head; rotates head to opposite side
22
Q
splenius capitis action
A
extends head; rotates head to same side
23
Q
longissimus capitis action
A
extends head; lateral flexion and rotation of head to same side
24
Q
scalenes action
A
flex, laterally flex, & rotate cervical vertebrae; elevate ribs 1 & 2 when inhaling
25
spinalis capitis action
extend vertebral column
26
spinalis cervicis action
extend vertebral column
27
spinalis thoracis action
extend vertebral column
28
iliocostalis cervicus action
maintains posture; laterally flexes vertebral column
29
iliocostalis thoracis action
maintains posture; laterally flexes vertebral column
30
iliocostalis lumborum action
maintains posture; laterally flexes vertebral column
31
longissimus capitis action
extend & rotate head; extends and laterally flexes vertebral column
32
longissimus cervicis action
extend & rotate head; extends and laterally flexes vertebral column
33
longissimus thoracis action
extend & rotate head; extends and laterally flexes vertebral column
34
rectus abdominis action
flexes vertebral column; flexes abdomen
35
external oblique action
compresses abdomen; flexes vertebral column
36
internal oblique action
compresses abdomen; flexes vertebral column
37
transverse abdominis action
compresses abdomen
38
diaphragm action
changes size of thorax
39
external intercostals action
lifts ribs during inhalation
40
internal intercostals action
draw ribs together during exhalation
41
innermost intercostals action
draw ribs together during exhalation
42
subclavius action
depresses/moves clavicle anteriorly; stabilizes pectoral girdle
43
pectoralis minor action
abducts scapula and rotates it downward
44
serratus anterior action
abducts scapula and rotates it upward
45
trapezius action
superior & inferior fibers: upward rotation and stabilization of scapula
middle fibers: adducts scapula
46
levator scapulae action
elevates scapula and rotates it downward
47
rhomboid major action
elevates & adducts scapula; rotates scapula downward and stabilizes it
48
rhomboid minor action
elevates & adducts scapula; rotates scapula downward and stabilizes it
49
pectoralis major action
adducts & medially rotates arm at shoulder
50
latissimus dorsi action
extends, adducts, & medially rotates arm at shoulder; draws arm inferiorly & posteriorly
51
deltoid action
lateral fibers: abducts arm
anterior fibers: flexes and medially rotates arm at shoulder
posterior fibers: extends and laterally rotates arm at shoulder
52
subscapularis action
medially rotates arm at shoulder
53
supraspinatus action
assists deltoid in abduction of arm
54
infraspinatus action
laterally rotates and adducts arm
55
teres minor action
laterally rotates, extends, & adducts arm at shoulder
56
teres major action
extends arm at shoulder; assists in adduction & medial rotation of arm at shoulder
57
coracobrachialis action
flexes & adducts arm at shoulder
58
biceps brachii action
flexes arm at shoulder; flexes forearm at elbow; supinates forearm
59
brachialis action
flexion of forearm at elbow
60
brachioradialis action
flexes arm at elbow; pronates and supinates forearm
61
triceps brachii action (long, medial, and lateral heads)
extends arm at elbow & shoulder
62
anconeus action
assists triceps brachii in extending the elbow
63
pronator teres action
pronates forearm; weakly flexes forearm at elbow
64
pronator quadratus action
pronates forearm
65
supinator action
supinates forearm at elbow
66
flexor carpi radialis action
flexes and abducts hand at wrist
67
flexor carpi ulnaris action
flexes and adducts hand at wrist
68
palmaris longus action
weakly flexes hand at wrist
69
flexor digitorum superficialis action
flexes middle phalanges at proximal interphalangeal joint; flexes proximal phalanges at metacarpophalangeal joint; flexes hand at wrist
70
flexor digitorum profundus action
flexes distal & middle phalanges at interphalangeal joint; flexes proximal phalanges at metacarpophalangeal joint; flexes hand at wrist
71
flexor policis longus action
flexes distal phalanges of thumbs at interphalangeal joint
72
extensor digitorum action
extends distal & middle phalanges at interphalangeal joint; extends proximal phalanges at metacarpophalangeal joint; extends hand at wrist
73
extensor carpi radialis longus action
extends and abducts hand at wrist
74
extensor carpi radialis brevis action
extends and abducts hand at wrist
75
extensor carpi ulnaris action
extends and adducts hand at wrist
76
thenar action
moves the pollex
77
hypothenar action
moves the little finger
78
intermediate action
moves all digits minus thumb
79
iliopsoas action
flexes hip joint
80
rectus femoris action
flexes thigh at hip joint; extends leg at the knee
81
vastus lateralis action
extends leg at the knee
82
vastus intermedius action
extends leg at the knee
83
vastus medialis action
extends leg at the knee
84
pectineus action
adducts thigh
85
adductor longus action
adducts thigh
86
adductor brevis action
adducts thigh
87
gracilis action
adducts thigh
88
adductor magnus action
adducts thigh
89
gluteus maximus action
extends & laterally rotates thigh
90
gluteus medius action
abducts & medially rotates thigh
91
gluteus minimus action
abducts & medially rotates thigh
92
semimembranosus action
extends thigh at hip and flexes knee
93
semitendonosus action
extends thigh at hip and flexes knee
94
biceps femoris action
extends thigh at hip and flexes knee
95
gastrocnemius action
flexes leg at knee; plantar flexes foot
96
plantaris action
flexes leg at knee; plantar flexes foot
97
soleus action
plantar flexes foot
98
tibialis posterior action
plantar flexes and inverts foot
99
flexor digitorum longus action
plantar flexes foot & flexes toes
100
flexor hallucis longus action
plantar flexes foot & flexes hallux
101
tibialis anterior action
dorsiflexes & inverts foot
102
extensor digitorum longus action
dorsiflexes foot & extends toes
103
extensor hallucis longus action
dorsiflexes foot & extends hallux
