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Unit 1 Back > Intrinsic back muscles and suboccipital triangle > Flashcards

Intrinsic back muscles and suboccipital triangle Flashcards

1
Q

What is the insertion of levator scapulae?

A

superior angle of the scapula

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2
Q

What is the origin of the serratus posterior superior?

A

spinous process C7-T3, nuchal ligament

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3
Q

What is the origin of the serratus posterior inferior?

A

spinous process T11-L2

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4
Q

What is the insertion of serratus posterior superior?

A

2nd to 4th ribs

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5
Q

What is the insertion of serratus posterior inferior?

A

inferior borders of 8th to 12th ribs

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6
Q

origin of iliocostalis cervicis

A

3rd to 7th ribs

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7
Q

insertion of iliocostalis cervicis

A

Transverse process C4-C6

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8
Q

What is the origin of levator scapulae?

A

Transverse process of C1-C4

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9
Q

innervation of levator scapulae

A

dorsal scapular nerve (C4-C5)

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10
Q

action of levator scapulae

A

elevates the scapula

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11
Q

innervation of serratus posterior inferior

A

spinal nerve T9-T12 (anterior rami)

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12
Q

action of serratus posterior inferior

A

depresses ribs

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14
Q

action of serratus posterior superior

A

elevates ribs

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16
Q

innervation of serratus posterior superior

A

spinal nerve T2-T5 (anterior rami)

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17
Q

origin of iliocostalis thoracis

A

7-12th ribs

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18
Q

insertion of iliocostalis thoracis

A

1-6th ribs

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19
Q

origin of iliocostalis lumborum

A

sacrum, iliac crest, thoracolumbar fascia

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20
Q

insertion of iliocostalis lumborum

A

6th-12ribs, thoracolumbar fascia (deep layer), transverse processes of upper lumbar vertebrae

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21
Q

innervation of iliocostalis muscles

A

spinal nn. C8-L1 (posterior rami, lateral branches)

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22
Q

action of intercostalis muscles

A

bilateral: extends the spine
unilateral: bends spine laterally to the same side

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23
Q

origin of longissimus capitis

A

transverse processes T1-T3; transverse and articulate process C4-C7

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24
Q

insertion of longissimus capitis

A

mastoid process of the temporal bone

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25
Q

origin of longissimus cervicis

A

transverse processes of T1-T6

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26
Q

insertion of longissimus cervicis

A

transverse processes of C2-C5

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27
origin of longissimus thoracis
sacrum, iliac crest, spinous processes of lumbar vertebrae, transverse processes of lower thoracic vertebrae
28
insertion of longissimus thoracis
2-12th rib, costal processes of lumbar, transverse processes of thoracic
29
innervation of longissimus muscles
spinal nn. C1-L5
30
action of longissimus muscles
capitis: bilateral - extends head; unilateral - flexes and rotates head to same side cervicis and thoracis: bilateral - extends spine; unilateral - bends spine laterally to the same side
31
origin of spinalis cervicis
spinous processes of C5-T2
32
insertion of spinalis cervicis
spinous processes of C2-C5
33
origin of spinalis thoracis
spinous processes of T10-L3
34
insertion of spinalis thoracis
spinous processes of T2-T8
35
innervation of spinalis muscles
spinal nn. (posterior rami)
36
action of spinalis muscles
bilateral: extends thoracic and cervical spine unilateral: bends thoracic and cervical spine to the same side
37
origin of splenius capitis
nuchal ligament, C3-C7 spinous process
38
insertion of splenius capitis
occipital bone (superior nuchal line, mastoid process)
39
origin of splenius cervicis
T3-T6 spinous process
40
insertion of splenius cervicis
C1-C2 transverse process
41
innervation of splenius muscles
spinal nn. C1-C6 (post. rami, lateral branches)
42
action of splenius muscles
bilateral: extends cervical spine and head unilateral: flexes and rotates head to the same side
43
origin of semispinalis capitis
C4-T7 transverse and articular processes
44
insertion of semispinalis capitis
in between superior and inferior nuchal lines
45
origin of semispinalis cervicis
T1-T6 transverse processes
46
insertion of semispinalis cervicis
C2-C5 spinous process
47
origin of semispinalis thoracis
T6-T12 transverse process
48
insertion of semispinalis thoracis
C6-T4 transverse process
49
innervation of semispinalis
posterior rami
50
action of semispinalis
bilateral: extends cervical and thoracic spines and head unilateral: bends head, cervical and thoracic spines to the same side, rotates to opposite side
51
origin and insertion of multifidus
C2-sacrum (between transverse and spinous processes, skipping two to four vertebrae)
52
innervation of multifidus
posterior rami
53
action of multifidus
bi: extends spine uni: flexes spine to the same side, rotates to the opposite side
54
origin and insertion of rotatores breves
T1-T12 (between transverse and spinous processes of adjacent vertebrae)
55
origin and insertion of rotatores longi
T1-T12 (between transverse and spinous processes, skipping one vertebrae)
56
innervation of rotatores
posterior rami
57
action of rotatores
bi: extends thoracic spine uni: rotates spine to opposite side
58
origin of obliquus capitis superior
C1transverse process
59
insertion of obliquus capitis superior
inferior nuchal line (middle third)
60
origin of obliquus capitis inferior
C2 spinous process
61
insertion of obliquus capitis inferior
C1 transverse process
62
innervation of obliquus capitis
C1 (posterior ramus, suboccipital n.)
63
action of oliquus capitis superior
Bilateral: extends head Unilateral: tilts head ipsilaterally, rotates contra-laterally.
64
origin of rectus capitis posterior major
C2 spinous process
65
insertion of rectus capitis posterior major
inferior nuchal line,middle third
66
origin of rectus capitis posterior minor
C1 (posterior tubercle)
67
insertion of rectus capitis posterior minor
inferior nuchal line, inner third
68
innervation of rectus capitis posterior major/minor
C1 (posterior ramus, suboccipital n.)
69
action of rectus capitis posterior major/minor
extends head
70
Action of the obliquus capitis posterior inferior
Bilateral: extends the head Unilateral: rotates ipsilaterally

Unit 1 Back (4 decks)

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