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IMSK Exam 1 > Muscles, Vessels and Nerves of Deep Back and Suboccipital Region > Flashcards

Muscles, Vessels and Nerves of Deep Back and Suboccipital Region Flashcards

1
Q

What is the origin of serratus posterior superior?

A

Nuchal ligament, spinous processes of C7 to T3

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2
Q

What is the insertion of serratus posterior superior?

A

Superior borders of ribs 2 to 4

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3
Q

What nerve innervates serratus posterior superior?

A

Intercostal nerves 2-5

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4
Q

What is the action of serratus posterior superior?

A

Proprioception; elevate ribs

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5
Q

What is the origin of serratus posterior inferior?

A

Spinous processes T11 to L2

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6
Q

What is the insertion of serratus posterior inferior?

A

Inferior borders of ribs 8-12

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7
Q

What nerve innervates serratus posterior inferior?

A

Anterior rami T9-T12

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8
Q

What is the action of serratus posterior inferior?

A

Proprioception; depress ribs

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9
Q

What is the origin of splenius capitis and cervicis?

A

Nuchal ligament and spinous processes C7-T6

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10
Q

What is the insertion of splenius capitis?

A

Mastoid process and lateral 1/3 inferior nuchal line

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11
Q

What is the insertion of splenius cervicis?

A

Transverse process C1-C3 or C4

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12
Q

What innervates splenius capitis and cervicis?

A

Posterior rami of spinal nerves

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13
Q

What is the action of splenius capitis or cervicis when working alone (ipsilateral)?

A

Lateral flexion of head; rotation of head to side of active muscles

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14
Q

What is the action of splenius capitis or cervicis when working together (contralateral)?

A

Extension of the head and neck

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15
Q

What are the three muscles of the erector spinae muscle group from lateral to medial?

A

Iliocostalis, longissimus, spinalis

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16
Q

What is the origin of the erector spinae muscle group?

A

Broad tendon from posterior iliac crest, posterior sacrum, sacrum-iliac ligaments, sacral and inferior lumbar spinous processes, and Supraspinous ligament

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17
Q

What nerve innervates the erector spinae muscle group?

A

Posterior rami of spinal nerves

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18
Q

What is the bilateral action of erector spinae muscle group?

A

Extend column and head

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19
Q

What is the unilateral action of erector spinae muscle group?

A

Lateral flexion of column

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20
Q

What are the three parts of the iliocostalis?

A

Lumborum, thoracis, cervicis

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21
Q

What is the insertion of the iliocostalis?

A

Angles of lower ribs and cervical transverse processes

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22
Q

What are the three parts of the longissimus?

A

Thoracis, cervicis, capitis

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23
Q

What is the insertion of longissimus?

A

Ribs between tubercles and angles, transverse processes in thoracic and cervical regions, mastoid process

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24
Q

What are the three parts of spinalis?

A

Thoracis, cervicis, capitis

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25
What is the insertion of spinalis?
Spinous processes in upper thoracic region to cranium
26
What is the origin of the transversospinae muscle group?
Transverse processes
27
What is the insertion of the transversospinae muscle group?
Spinous processes
28
What innervates the transversospinae muscle group?
Posterior rami of spinal nerves
29
What is the action of the transversospinae muscle group?
Extension
30
What are the three parts of the transversospinae muscle group?
Semispinalis, multifidus, rotatares
31
What are the three parts of the Semispinalis?
Thoracis, cervicis, capitis
32
What is the origin of Semispinalis?
C4-T12
33
What is the insertion of Semispinalis?
Occipital bone (capitis), spinous processes
34
What is the action of Semispinalis?
Extends the head and thoracic and cervical regions
35
What is the origin of the multifidus?
Post sacrum and pelvis, C2-L5 transverse processes
36
What is the action of multifidus?
Stabilization of the vertebrae during column movement
37
What is the action of rotatores?
Stabilize vertebrae during column movements
38
What are the two types of rotatores muscle?
Longus and brevis
39
What is the insertion of longus rotatores?
2 vertebral segments up from the rib it originates from
40
What is the insertion of brevis rotatores?
1 vertebral segment up from the rib it originates from
41
What is the origin of levator costarum muscles?
Transverse processes C7-T11
42
What is the insertion of levator costarum muscles?
Subjacent ribs between tubercle and angle
43
What innervates levator costarum muscles?
Posterior rami C8-T11
44
What is the action of levator costarum muscles?
Elevate the ribs in respiration; Lateral flexion of vertebral column
45
What is the origin of rectus capitis posterior major?
Spinous process of axis
46
What is the insertion of rectus capitis posterior major?
Inferior nuchal line (lateral)
47
What innervates rectus capitis posterior major?
Suboccipital nerve
48
What is the action of rectus capitis posterior major?
Extension; ipsilateral rotation; action at Atlanto occipital and Atlanto axial joints
49
What is the origin of rectus capitis posterior minor?
Posterior arch tubercle of atlas
50
What is the insertion of rectus capitis posterior minor?
Inferior nuchal line (medial)
51
What innervates rectus capitis posterior minor?
Suboccipital nerve
52
What is the action of rectus capitis posterior minor?
Extension at the Atlanto-occipital joint
53
What is the origin of superior obliquus capitis?
Transverse process of the atlas
54
What is the insertion of superior obliquus capitis?
Between superior and inferior nuchal lines
55
What innervates the superior obliquus capitis?
Suboccipital nerve
56
What is the action of the superior obliquus capitis?
Extension at the Atlanto-occipital joint
57
What is the origin of the inferior obliquus capitis?
Spinous process of the axis
58
What is the insertion of the inferior obliquus capitis?
Transverse process of the atlas
59
What innervates the inferior obliquus capitis?
Suboccipital nerve
60
What is the action of the inferior obliquus capitis?
Ipsilateral rotation at the Atlanto-axial joint
61
What are the superior/lateral boundaries of the suboccipital triangle?
Superior obliquus capitis
62
What are the superior medial boundaries of the suboccipital triangle?
Rectus capitis posterior major
63
What is the inferior/lateral boundary of the suboccipital triangle?
Inferior obliquus capitis
64
What forms the roof of the suboccipital triangle?
Semispinalis capitis

IMSK Exam 1 (15 decks)

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