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Gross Anatomy > Back - origin, insertion, innervation, action > Flashcards

Back - origin, insertion, innervation, action Flashcards

1
Q

Insertion for trapezius

A

lateral third of clavicle
acromion
scapular spine

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2
Q

Innveration of trapezius

A 
Accessory nerve (CN XI)
C3-C4 cervical plexus
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3
Q

Actions of trapezius

A 
Evelvates scapula obliquely
Rotates glenoid cavity superiorly
Tilts head ipsilaterally
Rotates head contralaterally
Retracts scapula medially
Depresses scapula
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4
Q

Origin of latissimus dorsi

A 
spinous process of t7-t12
thoracolumbar fascia
inferior angle of scapula
9-12th ribs
iliac crest
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5
Q

Insertion of latissimus dorsi

A

floor of intertubercular sulcus of humerus

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6
Q

innervation of latissimus dorsi

A

thoracodorsal nerve c6-c8

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7
Q

actions of latissimuss dorsi

A

internal rotation
adduction
extension
respiration-cough muscle

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8
Q

origin of rhomboid major

A

spinous process of t2-t5

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9
Q

insertion of rhomboid major

A

medial border of scapula below scapular spine

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10
Q

innervation of rhomboid major

A

dorsalscapular nerve c4-c5

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11
Q

actions of rhomboid major

A

steadies scapula

elevates medially

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12
Q

origin of rhomboid minor

A

spinous process of c7-t1

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13
Q

insertion of rhomboid minor

A

medial border above scapular spine

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14
Q

innervation of rhomboid minor

A

dorsalscapular nerve c4-c5

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15
Q

actions of rhomboid minor

A

steadies scapula

Elevates medially

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16
Q

origin of levator scapular

A

transverse process of c1-c4

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17
Q

insertion of levator scapula

A

superior angle of scapula

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18
Q

innervation of levator scapula

A

dorsalscapular nerve c4-c5

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19
Q

levator scapular action

A

Raises scapula medially while moving inferior angle medially

inclines neck ilpsilaterally

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20
Q

origin serratus posterior superior

A

nuchal ligament

c7-t3 spinous process

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21
Q

insertion of serratus posterior superior

A

2-4th ribs superior border of ribs

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22
Q

innervation of serratus posterior superior

A

spinal nerve t2-t5 anterior rami

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23
Q

action of serratus posterior superior

A

elevates ribs

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24
Q

origin of serratus posterior inferior

A

t11-L2 spinous process

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25
Q

insertion of serratus posterior inferior

A

8th-12th ribs inferior border near angles

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26
Q

innveration of serratus posterior inferior

A

spinal nerve t9-t12 anterior rami

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27
Q

actions of serratus posterior inferior

A

depresses ribs

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28
Q

what makes up the erector spinae

A

iliocostalis, longissimus, and spinalis

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29
Q

origin of iliocostalis cervicis

A

3rd-7th ribs

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30
Q

insertion of iliocostalis cervicis

A

c4-c6 transverse process

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31
Q

innervation of iliocostalis cervicis

A

spinal nerve c8-L1

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32
Q

action of iliocostalis cervicis

A

bilaterally-extends spine

unilaterally-bends spine laterally ipsilaterally

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33
Q

origin of iliocostalis thoracis

A

7th-12th ribs

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34
Q

insertion of iliocostalis thoracis

A

1st-6th ribs

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35
Q

innervation of iliocostalis thoracis

A

spinal nerve of c8-L1

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36
Q

action of ilicostalis thoracis

A

bilaterally-extends spine

unilaterally-bends spine laterally to the same side

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37
Q

origin of iliocostalis lumborum

A

sacrum, iliac crest, thoracolumbar fascia

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38
Q

insertion of iliocostalis lumborum

A

6th-12th ribs
thoracolubar fascia
upper lumbar vertebrae transverse processes

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39
Q

innervation of iliocostalis lumborum

A

spinal nerves c8-L1

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40
Q

actions of iliocostalis lumborum

A

bilaterally-extends spine

unilaterally-bends spine laterally ipsilaterally

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41
Q

Origin of trapezius

A

external occipital protuberance
nuchal ligament
T5-T12 spinous processes
Medial superior nuchal line

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42
Q

origin of longissimus capitis

A

transverse process and articular process of c4-c7

transverse process of t1-t3

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43
Q

insertion of longissimus capitis

A

temporal bone-mastoid process

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44
Q

innervation on longissimus capitis

A

spinal nerve c1-L5

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45
Q

action of longissimus capitis

A

bilat-flexes head

unilat-flexes and rotates head ipsilaterally

46
Q

origin of longissimus thoracis

A

sacrum
iliac crest
spinous process of lumbar vertebra
transverse process of lower thoracic vertebra

47
Q

innervation of longissimus thoracis

A

spinal nerve c1-L5

48
Q

action of longissimus thoracis

A

bilat-extends spine

unilat-bends spine laterally ipsilaterally

49
Q

origin of spinalis cervicis

A

spinous process of c5-t2

50
Q

insertion of spinalis cervicis

A

c2-c5 spinous process

51
Q

Innveration of spinalis cervicis

A

spinal nerve posterior rami

52
Q

action of spinalis cervicis

A

bilat-extends cervical and thoracic spine

unilat-bends cervical and thoracic spine ipsilaterally

53
Q

origin of spinalis thoracis

A

t10-L3

54
Q

insertion of spinalis thoracis

A

t2-t8 spinous process lateral surface

55
Q

innervation of spinalis thoracis

A

spinal nerve posterior rami

56
Q

action of spinalis thoracis

A

bilat-extends cervical and thoracic spine

unilat-bends cervical and thoracic spine ipsilaterally

57
Q

origin of splenius capitis

A

nuchal ligament

c3-c7 spinous process

58
Q

insertion of splenius capitis

A

lateral superior nuchal line

mastoid process

59
Q

innervation of splenius capitis

A

spinal nerve c1-c6 post rami, lat branches

60
Q

action of splenius capitis

A

bilat-extends cervical spine and head

unilat-flexes and rotates head ipsilaterally

61
Q

origins of splenius cervicis

A

spinous process t3-t6

62
Q

insertion of splenius cervicis

A

transverse process c1-c2

63
Q

innervation of splenius cervicis

A

spinal nerve c1-c6 post rami, lat branch

64
Q

action of splenius cervicis

A

bilat- extends cervical spine and head

unilat-flexes and rotates head ipsilaterally

65
Q

origin of semispinalis capitis

A

transverse and articular process of c4-c7

66
Q

insertion of semispinalis capitis

A

btwn superior and inferior nuchal lines

67
Q

innervation of semispinalis capitis

A

spinal nerve post rami

68
Q

action of semispinalis

A

bilat-extends thoracic and cervical spine and head
stabilizes craniovertebral joints
unilat-bends head, cervical and thoracic spines to same side, rotates to opposite side

69
Q

origin of semispinalis cervicis

A

transverse process of t1-t6

70
Q

insertion of semispinalis cervicis

A

spinous process of c2-c5

71
Q

innervation of semispinalis cervicis

A

spinal nerve, post rami

72
Q

action of semispinalis cervicis

A

bilat-extends thoracic and cervical spine and head
stabilizes craniovertebral joints
unilat-bends head, cervical and thoracic spines to same side, rotates to opposite side

73
Q

origin and insertion of multifidus

A

c2-sacrum btwn transverse and spinous process, skipping 2-4 vertebrae

74
Q

innervation of multifidus

A

spinal nerve posterior rami

75
Q

action of multifidus

A

bilat-extends spine

unilat-flexes spine to same side, rotates to opposite side

76
Q

origin and insertion of rotatores breves

A

t1-t12 btwn transverse and articular process of adjacent vertebra

77
Q

innervation of rotatores breves

A

spinal nerve, posterior rami

78
Q

action of rotatores breves

A

bilat-extends thoracic spine

unilat-rotates spine to opposite side

79
Q

origin and insertion of rotatores longi

A

t1-t12 btwn transervse and spinous process, skipping one vertebra

80
Q

innervation of rotatores longi

A

spinal nerve, posterior rami

81
Q

action of rotatores longi

A

bilat-extends thoracic spine

unilat-rotates spine to opposite side

82
Q

origin of obliquus capitis inferior

A

spinous process c2

83
Q

insertion of obliquus capitis inferior

A

transverse process of c1

84
Q

innervation of obliquus capitis inferior

A

C1 posterior rami suboccipital nerve

85
Q

origin of obliquus capitis superior

A

c1 transverse process

86
Q

insertion of obliquus capitis superior

A

middle 1/3 of inferior nuchal line

above rectus capitis posterior major

87
Q

innervation of obliquus capitis superior

A

c1 posterior rami=suboccipital nerve

88
Q

action of obliquus capitis superior

A

bilat-extends head

unilat-tilts head to same side and rotates head to opposite side

89
Q

origin of rectus capitis posterior major

A

spinous process of c2

90
Q

insertion of rectus capitis posterior major

A

middle 1/3 of inferior nuchal line

91
Q

innervation of rectus capitis posterior major

A

c1 posterior rami=suboccipital nerve

92
Q

action of rectus capitis posterior major

A

bilat-extends head

unilat-rotates head to the same side

93
Q

origin of rectus capitis posterior minor

A

c1 posterior tubercle

94
Q

insertion of rectus capitis posterior minor

A

inner 1/3 of inferior nuchal line

95
Q

innervation of rectus capitis posterior minor

A

c1 posterior rami=suboccipital nervse

96
Q

action of rectus capitis posterior minor

A

bilat-extends head

unilat-rotates head to same side

97
Q

origin of sternocleidomastiod

A

sternum and medial 1/3 of clavicle

98
Q

innervation of sternocleidomastiod

A

motor-accessory nerve (CN XI)

pain-cervical plexus c2,c3

99
Q

action of sternocleidomastiod

A

unilat-tilts head to same side, rotates head to opposite side
bilat-extends head, aids in respiration when head is fixed

100
Q

origin of anterior scalene

A

anterior tubercles or transverse process of c3-c6

101
Q

insertion of anterior scalene

A

scalene tubercle of 1st rib

102
Q

innervation of anterior scalene

A

direction branches from cervical and brachial plexus c3-c8

103
Q

action of anterior scalene

A

mobile ribs-elevates upper ribs during forced inspiration

fixed ribs-bends cervical spine to same side, flexes neck bilaterally

104
Q

origin of middle scalene

A

transverse process of c1-c2

posterior tubercles of transverse process c3-c7

105
Q

insertion of middle scalene

A

1st rib posterior to groove for subclavian artery

106
Q

innervation of middle scalene

A

direct branches from cervical and brachial plexuses c3-c8

107
Q

actions of middle scalene

A

mobile ribs-elevate upper ribs during forced inspiration

fixed ribs-bends cervical spine to same side unilaterally and flexes neck bilaterally

108
Q

origin of posterior scalene

A

posterior tubercles of transverse process of c5-c7

109
Q

insertion of posterior scalene

A

2nd rib outer surface

110
Q

innervation of posterior scalene

A

direct branches from cervical and brachial plexuses c3-c8

111
Q

action of posterior scalene

A

mobile ribs-elevate upper ribs during forced inspiration

fixed ribs-bends cervical spine to same side unilaterally and flexes neck bilaterally

112
Q

Actions of obliquus capitis inferior

A

bilat-extends head

unilat-rotates head to same side

Gross Anatomy (8 decks)

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