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Anatomy > Axial Muscles > Flashcards

Axial Muscles Flashcards

1
Q

What is the origin of the latissimus dorsi?

A

Spinous process of vertebrae, ribs 8-12

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2
Q

What is the insertion of the latissimus dorsi?

A

Humerus

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3
Q

What is the action of the latissimus dorsi?

A

Extension, adduction, and medial rotation of shoulder

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4
Q

What is the origin of the pectoralis major?

A

Ribs 2-6, body of sternum, clavicle

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5
Q

What is the insertion of the pectoralis major?

A

Greater Tubercle Humerus

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6
Q

What is the action of the pectoralis major?

A

Flexion, adduction, medial rotation shoulder

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7
Q

What is the origin of the teres minor?

A

Scapula

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8
Q

What is the insertion of the teres minor?

A

Greater Tubercle Humerus

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9
Q

What is the action of the teres minor?

A

Lateral Rotation Shoulder

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10
Q

What is the origin of the infraspinatus?

A

Infraspinous fossa

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11
Q

What is the insertion of the infraspinatus?

A

Greater Tubercle Humerus

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12
Q

What is the action of the infraspinatus?

A

Lateral Rotation Shoulder

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13
Q

What is the origin of the subscapularis?

A

Subscapular fossa

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14
Q

What is the insertion of the subscapularis?

A

Lesser Tubercle Humerus

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15
Q

What is the action of the subscapularis?

A

Medial Rotation Shoulder

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16
Q

What is the origin of the supraspinatus?

A

Supraspinous fossa

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17
Q

What is the insertion of the supraspinatus?

A

Greater Tubercle Humerus

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18
Q

What is the action of the supraspinatus?

A

Abduction Shoulder

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19
Q

What is the origin of the deltoid?

A

Acromion & Scapular Spine

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20
Q

What is the insertion of the deltoid?

A

Humerus

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21
Q

What is the action of the deltoid?

A

Whole - Abduction of shoulder
Anterior - Flexion/Medial rotation
Posterior - Extension/Lateral rotation

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22
Q

What is the origin of the trapezius?

A

Occipital, Spinous Process of Thoracic Vertebrae

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23
Q

What is the insertion of the trapezius?

A

Acromion & Scapular Spine

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24
Q

What is the action of the trapezius?

A

Move scapula, elevate clavicle, extend neck

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25
Q

What is the origin of the occipitofrontalis frontal?

A

Epicranal aponeurosis

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26
Q

What is the insertion of the occipitofrontalis frontal?

A

Eyebrow

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27
Q

What is the action of the occipitofrontalis frontal?

A

Raise Eyebrows

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28
Q

What is the origin of the occipitofrontalis occipital?

A

Occipital/frontal

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29
Q

What is the insertion of the occipitofrontalis occipital?

A

Epicranal aponeurosis

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30
Q

What is the action of the occipitofrontalis occipital?

A

Tense Scalp

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31
Q

What is the origin of the platysma?

A

2nd rib/ Acromion

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32
Q

What is the insertion of the platysma?

A

Mandible/Cheek

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33
Q

What is the action of the platysma?

A

Tense Neck, Depress Mandible, pull lip inferior

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34
Q

What is the origin of the orbicularis oculi?

A

Medial orbit

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35
Q

What is the insertion of the orbicularis oculi?

A

eyelids

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36
Q

What is the action of the orbicularis oculi?

A

Close eyes

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37
Q

What is the origin of the orbicularis oris?

A

Maxilla/Mandible

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38
Q

What is the insertion of the orbicularis oris?

A

Lips

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39
Q

What is the action of the orbicularis oris?

A

Close lips

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40
Q

What is the origin of the temporalis?

A

Temporal

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41
Q

What is the insertion of the temporalis?

A

Mandible

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42
Q

What is the action of the temporalis?

A

Jaw Closer

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43
Q

What is the origin of the masseter?

A

Zygomatic Arch

44
Q

What is the insertion of the masseter?

45
Q

What is the action of the masseter?

A

Jaw Closer

46
Q

What is the origin of the lateral pterygoid?

47
Q

What is the insertion of the lateral pterygoid?

48
Q

What is the action of the lateral pterygoid?

A

Jaw Opener/Lateral

49
Q

What is the origin of the medial pterygoid?

50
Q

What is the insertion of the medial pterygoid?

51
Q

What is the action of the medial pterygoid?

A

Jaw Closer/Medial

52
Q

What is the origin of the inferior rectus?

53
Q

What is the insertion of the inferior rectus?

A

Medial eyeball

54
Q

What is the action of the inferior rectus?

A

Looks Inferiorly

55
Q

What is the origin of the medial rectus?

56
Q

What is the insertion of the medial rectus?

A

Medial eyeball

57
Q

What is the action of the medial rectus?

A

Looks medially

58
Q

What is the origin of the superior rectus?

59
Q

What is the insertion of the superior rectus?

A

Superior eyeball

60
Q

What is the action of the superior rectus?

A

Looks superiorly

61
Q

What is the origin of the lateral rectus?

62
Q

What is the insertion of the lateral rectus?

A

Lateral eyeball

63
Q

What is the action of the lateral rectus?

A

Looks laterally

64
Q

What is the origin of the inferior oblique?

65
Q

What is the insertion of the inferior oblique?

A

Inferior/lateral eyeball

66
Q

What is the action of the inferior oblique?

A

Looks superiorly/laterally

67
Q

What is the origin of the superior oblique?

68
Q

What is the insertion of the superior oblique?

A

Superior/lateral eyeball

69
Q

What is the action of the superior oblique?

A

Looks inferior/laterally

70
Q

What is the origin of the genioglossus?

71
Q

What is the insertion of the genioglossus?

72
Q

What is the action of the genioglossus?

A

Depress Tongue

73
Q

What is the origin of the sternocleidomastoid?

A

Sternal clavicle/manubrium

74
Q

What is the insertion of the sternocleidomastoid?

75
Q

What is the action of the sternocleidomastoid?

A

Flex neck, lateral bend/rotate

76
Q

What is the origin of the erector spinae spinalis?

A

Iliac crest, sacrum, lumbar spinous process

77
Q

What is the origin of the erector spinae longissimus?

A

Iliac crest, sacrum, lumbar spinous process

78
Q

What is the origin of the erector spinae iliocostalis?

A

Iliac crest, sacrum, lumbar spinous process

79
Q

What is the insertion of the erector spinae spinalis?

A

Spinous process

80
Q

What is the action of the erector spinae spinalis?

A

Bilateral = Vertebral extension
Unilateral = lateral flexion

81
Q

What is the insertion of the erector spinae longissimus?

A

Transverse process

82
Q

What is the action of the erector spinae longissimus?

A

Bilateral = Vertebral extension
Unilateral = lateral flexion

83
Q

What is the insertion of the erector spinae iliocostalis?

84
Q

What is the action of the erector spinae iliocostalis?

A

Bilateral = Vertebral extension
Unilateral = lateral flexion

85
Q

What is the origin of the scalenes?

A

Transverse process

86
Q

What is the insertion of the scalenes?

A

Rib one and two

87
Q

What is the action of the scalenes?

A

Elevate ribs, flex neck

88
Q

What is the origin of the external intercostal?

A

Inferior rib

89
Q

What is the insertion of the external intercostal?

A

Superior rib

90
Q

What is the action of the external intercostal?

A

Elevate ribs

91
Q

What is the origin of the internal intercostal?

A

Superior rib

92
Q

What is the insertion of the internal intercostal?

A

Inferior rib

93
Q

What is the action of the internal intercostal?

A

Depress ribs

94
Q

What is the origin of the external oblique?

95
Q

What is the insertion of the external oblique?

A

Ilial Crest

96
Q

What is the action of the external oblique?

A

Compress abdomen, depress ribs, flexes spine

97
Q

What is the origin of the internal oblique?

A

Iliac crest

98
Q

What is the insertion of the internal oblique?

A

Ribs 5-12, Xiphoid

99
Q

What is the action of the internal oblique?

A

Compress abdomen, depress ribs, flexes spine

100
Q

What is the origin of the diaphragm?

A

Xiphoid, Ribd 4-10, Lumbar vertebrae body

101
Q

What is the insertion of the diaphragm?

A

Central Tendinous Sheet

102
Q

What is the action of the diaphragm?

A

Expands thoracic cavity

103
Q

What is the origin of the rectus abdominis?

A

Pubic symphysis

104
Q

What is the insertion of the rectus abdominis?

A

Costal cartilage, Xiphoid

105
Q

What is the action of the rectus abdominis?

A

Compress abdomen, depress ribs, flexes spine

106
Q

Where are the bulbospongiosus, ischiocavernosus, superficial transverse perineal, deep transverse perineal, and external sphincter located?

A

Urogenital Triangle

107
Q

Where are the coccygeus, levitator ani iliococcygeus, and levator ani pubococcygeus located?

A

Anal Triangle

Anatomy (2 decks)

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