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Muscle's O.I.A.I. & A.N with Images > Muscles of the Back Region > Flashcards

Muscles of the Back Region Flashcards

1
Q
A

Erector spinae

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2
Q

Origin(4)

A

Erector spinae

  1. iliac crest
  2. sacrum
  3. tranverse & spinous processes of vertebrae
  4. supraspinal ligament
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3
Q

Insertion(3)

A

Erector spinae

  1. Angles of the ribs
  2. tranverse and spinous processes of vertebrae
  3. posterior aspect of the skull
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4
Q

Action

A

Erector spinae

​extends and laterally bends the trunk, neck, and head

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5
Q

Innervation

A

Erector spinae

dorsal primary rami of spinal nerves C1-S5

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6
Q

Artery (4)

A

Erector spinae

  1. deep cervical artery
  2. posterior intercostal arteries
  3. subcostal arteries
  4. lumbar arteries
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7
Q

Notes

A

the erector spinae is separated into 3 columns of muscle:

1- iliocostalis laterally

2- longissimus in an intermediate position

3- spinalis medially

each of these columns has multiple named parts

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8
Q
A

iliocostalis

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9
Q

origin (2)

A

iliocostalis

  1. iliac crest
  2. sacrum
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10
Q

Insertion (1)

A

iliocostalis

  1. angles of the ribs
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11
Q

Action

A

iliocostalis

extends and laterally bends the trunk and neck

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12
Q

Innervation

A

iliocostalis

dorsal primary rami of spinal nerves C4-S5

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13
Q

Artery (4)

A

iliocostalis

  1. deep cervical artery
  2. posterior intercostal arteries
  3. subcostal arteries
  4. lumbar arteries
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14
Q

Notes

A

iliocostalis

the most lateral part of the erector spinae; it may be subdivided into:

1- lumborum

2- thoracis

3- cervicis portions

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15
Q
A

interspinales

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16
Q

Origin

A

interspinales

upper border of spinous process

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17
Q

Insertion

A

interspinales

lower border of spinous process above

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18
Q

Action

A

interspinales

extend truck and neck

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19
Q

Innervation

A

interspinales

dorsal primary rami of spinal nerves C1-L5

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20
Q

Artery (4)

A

interspinales

  1. deep cervical artery
  2. posterior intercostal arteries
  3. subcostal arteries
  4. lumbar arteries
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21
Q

Notes

A

interspinales

these are small and fairly insignificant muscles

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22
Q
A

intertransversarii

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23
Q

Origin

A

intertranversarii

upper border of tranverse process

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24
Q

Insertion

A

intertransversarii

lower border of tranverse process above

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25
Q

Action

A

intertransversarii

laterally bend trunnk and neck

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26
Q

Artery (4)

A

intertransversarii

  1. deep cervical artery
  2. posterior intercostal arteries
  3. subcostal arteries
  4. lumbar arteries
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27
Q

Artery (4)

A

intertransversarii

  1. deep cervical artery
  2. posterior intercostal arteries
  3. subcostal arteries
  4. lumbar arteries
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28
Q

Notes

A

intertransversarii

these are small and fairly isignificant muscles

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29
Q
A

longissimus

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30
Q

Origin

A

longissimus

transverse process at inferior vertebral levels

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31
Q

Insertion (2)

A

longissimus

transverse process at superior vertebral levels and mastoid process

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32
Q

Action

A

longissimus

extends and laterally gends the trunk, neck and head

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33
Q

Innervation

A

Longissimus

dorsal primary rami of spinal nerves C1-S1

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34
Q

Artery (4)

A

longissimus

  1. deep cervical artery
  2. posterior intercostal arteries
  3. subcostal arteries
  4. lumbar arteries
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35
Q

Notes

A

longissimus

the intermediate part of the erector spinae; it may be subdivided into:

1- thoracis

2- cervicis

3- capitis portions

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36
Q
A

Multifidus

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37
Q

Origin (2)

A

Multifidus

  1. Sacrum
  2. tranverse processes of C3- L5
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38
Q

Insertion

A

Multifidus

spinous processes 2- 4 vertebral levels uperior to their origins

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39
Q

Action

A

Multifidus

extend and laterally bend trunk and neck, rotate to opposite side

40
Q

Innervation

A

Multifidus

dorsal primary rami of spinal nerves C1 - L5

41
Q

Artery (4)

A

Multifidus

  1. deep cervical artery
  2. posterior intercostal arteries
  3. subcostal arteries
  4. lumbar arteries
42
Q

Notes

A

Multifidus

Semispinalis, multifidus, and rotatores make up the transversospinal muscle group

43
Q
A

obliquus capitis inferior

44
Q

Origin

A

obliquus capitis inferior

spinous process of the axis

45
Q

Insertion

A

obliquus capitis inferior

transverse process of atlas

46
Q

Action

A

obliquus capitis inferior

rotates the head to the same side

47
Q

Innervation

A

obliquus capitis inferior

subocciptial nerve DPR (dorsal primary rami) of C1

48
Q

Artery

A

obliquus capitis inferior

occipital artery

49
Q

Notes

A

greater occipital nerve (DPR of C2) passes superiorly around the inferior margin of inferior oblique

50
Q
A

obliquus capitis superior

51
Q

Origin

A

obliquus capitis superior

transverse process of atlas

52
Q

Insertion

A

obliquus capitis supeior

occipital bone above inferior nuchal line

53
Q

Action

A

obliquus capitis superior

extends the head, roates the head to the same side

54
Q

Innervation

A

obliquus capitis superior

suboccipital nerve (DPR of C1)

55
Q

Artery

A

obliquus capitis superior

occipital artery

56
Q

Notes

A

obliquus capitis superior

suboccipital triangle is formed by:

1- obliquus capitis superior

2- obliquus capitis inferior

3- rectus capitis posterior major

57
Q
A

rectus capitis posterior major

58
Q

Origin

A

rectus capitis posterior major

spinous process of axis

59
Q

Insertion

A

rectus capitis posterior major

inferior nuchal line

60
Q

Action

A

rectus capitis posterior major

extends the head, rotate to same side

61
Q

Innervation

A

rectus capitis posterior major

suboccipital nerve (DPR of C1)

62
Q

Artery

A

rectus capitis posterior major

occipital artery

63
Q
A

rectus capitis posterior minor

64
Q

Origin

A

posterior tubercle of atlas

65
Q

Insertion

A

rectus capitis posterior minor

inferior nuchal line medially

66
Q

Action

A

rectus capitis posterior minor

extends the head

67
Q

Innervation

A

rectus capitis posterior minor

suboccipital (DPR of C1)

68
Q

Artery

A

rectus capitis posterior minor

occipital artery

69
Q

Notes

A

rectus capitis posterior minor

rectus capitis posterior minor is deeper and inserts more medial than rectus capitis posterior major

70
Q
A

rotatores

71
Q

Origin

A

rotatores

transverse processes

72
Q

Insertion (2)

A

rotatores

1- the LONG rotatores: spines 2 vertebrae above origin

2- the SHORT rotatores: spines 1 vertebrae above origin

73
Q

Action

A

rotatores

rotates the vertebral colum to the opposite side

74
Q

Innervation

A

rotatores

dorsal primary rami of spinal nerves C1-L5

75
Q

Artery (4)

A

rotatores

  1. deep cervical artery
  2. posteior intercostal arteries
  3. subcostal arteries
  4. lumbar arteries
76
Q

Notes

A

rotatores

semispinalis, multifidus and rotatores make up the TRANSVERSOSPINAL muscle group

77
Q
A

semispinalis

78
Q

Origin

A

semispinalis

transverse processes of C7-T12

79
Q

Insertion (2)

A

semispinalis

1- capitis: back of skull between nuchal lines

2- cervicis & thoracis: spines 4-6 vertebrae above origin

80
Q

Action

A

semispinalis

extends teh trunk and laterally bends the trunk, rotates the trunk to the opposite side

81
Q

Innervation

A

semispinalis

dorsal primary rami of spinal nerves C1- T12

82
Q

artery (4)

A

semispinalis

  1. deep vertical artery
  2. posterior intercostal arteries
  3. subcostal arteries
  4. lumbar arteries
83
Q

Notes (2)

A

semispinalis

1- three parts are named based on their insertions,

Capitis, Cervicis & Thoracis

2- Semispinalis, multifidus, and rotatores make up the TRANSVERSOSPINAL muscle group

84
Q
A

splenius

85
Q

Origin (2)

A

splenius

1- ligamentum nuchae

2- spines C7- T6

86
Q

Insertion (3)

A

splenius

1- Capitis: mastoid process

2-Capitis: superior nuchal line laterally

3- posterior tubercles of C1-C3 vertebrae

87
Q

Action (2)

A

splenius

extends and laterally bends neck and head;

rotates head to same side

88
Q

Innervation

A

splenius

dorsmal primary rami of spinal nerves C2-C6

89
Q

Artery (2)

A

splenius

1- deep cervical artery

2- posterior intercostal arteries

90
Q

Notes

A

splenius

SPLENIUS means bandage, it gets its name from its broad flat shape

91
Q
A

splenius cervicis

92
Q

Origin (2)

A

splenius cervicis

1- ligamentum nuchae

2- spines of C7- T6 vertebrae

93
Q

Insertion

A

splenius cervicis

posterior tubercles of the tranverse processes of C1- C3

94
Q

Action

A

splenius cervicis

extends and laterally bends neck and head, rotates head to the same side

95
Q

Innervation

A

splenius cervicis

DPR of spinal nerves C2-C6

96
Q

Artery (2)

A

splenius cervicis

1- deep cervical artery

2- posterior intercostal arteries

97
Q

Notes

A

splenius cervicis

Named for its shape: splenius means bandage and cervicis refers to the insertion of this portion of the muscle

Muscle's O.I.A.I. & A.N with Images (2 decks)

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