Muscle Actions Flashcards

1
Q

orbicularis oculi action

A

closes eyelids

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2
Q

levator palpebrae superioris action

A

elevation of upper lip

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3
Q

orbicularis oris action

A

closes & protrudes lips

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4
Q

zygomaticus major action

A

elevates corners of mouth

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5
Q

zygomaticus minor action

A

elevation of upper lips

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6
Q

buccinator action

A

compression of cheek

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7
Q

occipitofrontalis action

A

elevates eyebrows, wrinkles forehead, moves scalp

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8
Q

risorius action

A

draws mouth corners laterally

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9
Q

superior rectus action

A

elevates & medially moves the eyes

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10
Q

inferior rectus action

A

depresses & medially moves the eyes

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11
Q

lateral rectus action

A

outward/lateral movement of eyes

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12
Q

medial rectus action

A

inward/medial movement of eyes

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13
Q

superior oblique action

A

depresses & laterally moves the eyes

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14
Q

inferior oblique action

A

elevates & medially moves the eyes

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15
Q

masseter action

A

elevates & retracts mandible

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16
Q

temporalis action

A

elevates & retracts mandible

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17
Q

medial pterygoid action

A

elevates & protracts mandible

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18
Q

lateral pterygoid action

A

protracts mandible

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19
Q

digastric action

A

opens the mouth and elevates hyoid bone

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20
Q

sternocleidomastoid action

A

flexes the cervical vertebrae

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21
Q

semispinalis capitis action

A

extends head; rotates head to opposite side

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22
Q

splenius capitis action

A

extends head; rotates head to same side

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23
Q

longissimus capitis action

A

extends head; lateral flexion and rotation of head to same side

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24
Q

scalenes action

A

flex, laterally flex, & rotate cervical vertebrae; elevate ribs 1 & 2 when inhaling

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25
Q

spinalis capitis action

A

extend vertebral column

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26
Q

spinalis cervicis action

A

extend vertebral column

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27
Q

spinalis thoracis action

A

extend vertebral column

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28
Q

iliocostalis cervicus action

A

maintains posture; laterally flexes vertebral column

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29
Q

iliocostalis thoracis action

A

maintains posture; laterally flexes vertebral column

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30
Q

iliocostalis lumborum action

A

maintains posture; laterally flexes vertebral column

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31
Q

longissimus capitis action

A

extend & rotate head; extends and laterally flexes vertebral column

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32
Q

longissimus cervicis action

A

extend & rotate head; extends and laterally flexes vertebral column

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33
Q

longissimus thoracis action

A

extend & rotate head; extends and laterally flexes vertebral column

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34
Q

rectus abdominis action

A

flexes vertebral column; flexes abdomen

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35
Q

external oblique action

A

compresses abdomen; flexes vertebral column

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36
Q

internal oblique action

A

compresses abdomen; flexes vertebral column

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37
Q

transverse abdominis action

A

compresses abdomen

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38
Q

diaphragm action

A

changes size of thorax

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39
Q

external intercostals action

A

lifts ribs during inhalation

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40
Q

internal intercostals action

A

draw ribs together during exhalation

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41
Q

innermost intercostals action

A

draw ribs together during exhalation

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42
Q

subclavius action

A

depresses/moves clavicle anteriorly; stabilizes pectoral girdle

43
Q

pectoralis minor action

A

abducts scapula and rotates it downward

44
Q

serratus anterior action

A

abducts scapula and rotates it upward

45
Q

trapezius action

A

superior & inferior fibers: upward rotation and stabilization of scapula
middle fibers: adducts scapula

46
Q

levator scapulae action

A

elevates scapula and rotates it downward

47
Q

rhomboid major action

A

elevates & adducts scapula; rotates scapula downward and stabilizes it

48
Q

rhomboid minor action

A

elevates & adducts scapula; rotates scapula downward and stabilizes it

49
Q

pectoralis major action

A

adducts & medially rotates arm at shoulder

50
Q

latissimus dorsi action

A

extends, adducts, & medially rotates arm at shoulder; draws arm inferiorly & posteriorly

51
Q

deltoid action

A

lateral fibers: abducts arm
anterior fibers: flexes and medially rotates arm at shoulder
posterior fibers: extends and laterally rotates arm at shoulder

52
Q

subscapularis action

A

medially rotates arm at shoulder

53
Q

supraspinatus action

A

assists deltoid in abduction of arm

54
Q

infraspinatus action

A

laterally rotates and adducts arm

55
Q

teres minor action

A

laterally rotates, extends, & adducts arm at shoulder

56
Q

teres major action

A

extends arm at shoulder; assists in adduction & medial rotation of arm at shoulder

57
Q

coracobrachialis action

A

flexes & adducts arm at shoulder

58
Q

biceps brachii action

A

flexes arm at shoulder; flexes forearm at elbow; supinates forearm

59
Q

brachialis action

A

flexion of forearm at elbow

60
Q

brachioradialis action

A

flexes arm at elbow; pronates and supinates forearm

61
Q

triceps brachii action (long, medial, and lateral heads)

A

extends arm at elbow & shoulder

62
Q

anconeus action

A

assists triceps brachii in extending the elbow

63
Q

pronator teres action

A

pronates forearm; weakly flexes forearm at elbow

64
Q

pronator quadratus action

A

pronates forearm

65
Q

supinator action

A

supinates forearm at elbow

66
Q

flexor carpi radialis action

A

flexes and abducts hand at wrist

67
Q

flexor carpi ulnaris action

A

flexes and adducts hand at wrist

68
Q

palmaris longus action

A

weakly flexes hand at wrist

69
Q

flexor digitorum superficialis action

A

flexes middle phalanges at proximal interphalangeal joint; flexes proximal phalanges at metacarpophalangeal joint; flexes hand at wrist

70
Q

flexor digitorum profundus action

A

flexes distal & middle phalanges at interphalangeal joint; flexes proximal phalanges at metacarpophalangeal joint; flexes hand at wrist

71
Q

flexor policis longus action

A

flexes distal phalanges of thumbs at interphalangeal joint

72
Q

extensor digitorum action

A

extends distal & middle phalanges at interphalangeal joint; extends proximal phalanges at metacarpophalangeal joint; extends hand at wrist

73
Q

extensor carpi radialis longus action

A

extends and abducts hand at wrist

74
Q

extensor carpi radialis brevis action

A

extends and abducts hand at wrist

75
Q

extensor carpi ulnaris action

A

extends and adducts hand at wrist

76
Q

thenar action

A

moves the pollex

77
Q

hypothenar action

A

moves the little finger

78
Q

intermediate action

A

moves all digits minus thumb

79
Q

iliopsoas action

A

flexes hip joint

80
Q

rectus femoris action

A

flexes thigh at hip joint; extends leg at the knee

81
Q

vastus lateralis action

A

extends leg at the knee

82
Q

vastus intermedius action

A

extends leg at the knee

83
Q

vastus medialis action

A

extends leg at the knee

84
Q

pectineus action

A

adducts thigh

85
Q

adductor longus action

A

adducts thigh

86
Q

adductor brevis action

A

adducts thigh

87
Q

gracilis action

A

adducts thigh

88
Q

adductor magnus action

A

adducts thigh

89
Q

gluteus maximus action

A

extends & laterally rotates thigh

90
Q

gluteus medius action

A

abducts & medially rotates thigh

91
Q

gluteus minimus action

A

abducts & medially rotates thigh

92
Q

semimembranosus action

A

extends thigh at hip and flexes knee

93
Q

semitendonosus action

A

extends thigh at hip and flexes knee

94
Q

biceps femoris action

A

extends thigh at hip and flexes knee

95
Q

gastrocnemius action

A

flexes leg at knee; plantar flexes foot

96
Q

plantaris action

A

flexes leg at knee; plantar flexes foot

97
Q

soleus action

A

plantar flexes foot

98
Q

tibialis posterior action

A

plantar flexes and inverts foot

99
Q

flexor digitorum longus action

A

plantar flexes foot & flexes toes

100
Q

flexor hallucis longus action

A

plantar flexes foot & flexes hallux

101
Q

tibialis anterior action

A

dorsiflexes & inverts foot

102
Q

extensor digitorum longus action

A

dorsiflexes foot & extends toes

103
Q

extensor hallucis longus action

A

dorsiflexes foot & extends hallux