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Spinal Anatomy I - Exam 3 > Erector Spinae (Sacrospinalis) > Flashcards

Erector Spinae (Sacrospinalis) Flashcards

1
Q

Which muscles represent the 4th layer of the true back?

A

erector spinae or sacrospinalis muscles

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2
Q

Which muscles are identified as erector spinae or sacrospinalis muscles?

A
  • iliocostalis
  • longissimus
  • spinalis
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3
Q

What muscles are classically identified as iliocostalis muscles?

A
  • iliocostalis lumborum
  • iliocostalis thoracis
  • iliocostalis cervicis
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4
Q

What osseous parts of the vertebral column serve as an origin to the iliocostalis lumborum?

A
  • spinous processes of T11-T12, L1-L5
  • median sacral crest
  • lateral sacral crest
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5
Q

What is the insertion for the iliocostalis lumborum?

A

costal angles of the lower 6-9 ribs (ribs 6-12 or 3-12)

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6
Q

Contraction of the iliocostalis lumborum will result in what movements?

A
  • extension, lateral flexion, and rotation of lumbar spine

- lateral pelvic movement

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7
Q

What is the innervation of the iliocostalis lumborum?

A

dorsal rami of lower thoracic and all lumbar spinal nerves

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8
Q

What muscles are identified as subdivisions within the iliocostalis lumborum?

A
  • iliocostalis lumborum pars lumborum

- iliocostalis lumborum pars thoracis

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9
Q

What osseous parts of the vertebral column serve as an origin to the iliocostalis lumborum pars lumborum?

A

spinous processes of L1-L5

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10
Q

What is the insertion for the iliocostalis lumborum pars lumborum?

A

iliac crest of the innominate bone

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11
Q

What osseous parts of the vertebral column serve as an origin to the iliocostalis lumborum pars thoracis?

A
  • posterior superior iliac spine (PSIS)

- iliac crest of the innominate bone

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12
Q

What is the insertion for the iliocostalis lumborum pars thoracis?

A

costal angles of lower 8-9 ribs (rib 3 or 4 to rib 12)

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13
Q

Which subdivision of the iliocostalis muscle appears to have a reversal of origin-insertion?

A

iliocostalis lumborum pars lumborum

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14
Q

What osseous parts of the vertebral column serve as an origin to the iliocostalis thoracis?

A

none

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15
Q

What is the origin for the iliocostalis thoracis?

A

costal angles of the lower 6-7 ribs (rib 5 or 6 to rib 12)

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16
Q

What is the insertion for the iliocostalis thoracis?

A
  • costal angles of the upper 6-7 ribs

- transverse process of C7

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17
Q

What osseous part of the vertebral column serves as insertion for the iliocostalis thoracis?

A

transverse process of C7

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18
Q

Which subdivision of the iliocostalis primarily originates and inserts on ribs?

A

iliocostalis thoracis

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19
Q

Contraction of iliocostalis will result in what movements?

A

extension and lateral flexion of the thoracic spine

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20
Q

What is the innervation of the iliocostalis thoracis?

A

dorsal rami of upper 6 thoracic spinal nerves (T1-T6 cord levels)

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21
Q

What osseous parts of the vertebral column serve as an origin to the iliocostalis cervicis?

A

none

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22
Q

What is the origin for the iliocostalis cervicis?

A

costal angles of the upper 3-6 ribs (ribs 1-3 or 6)

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23
Q

What is the insertion for the iliocostalis cervicis?

A

posterior tubercle of transverse process of C3 or C4-C6

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24
Q

Contraction of iliocostalis cervicis will result in what movements?

A

extension, lateral flexion, and rotation of the lower cervical spine

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25
Q

What is the innervation of the iliocostalis cervicis?

A

dorsal rami of T1 and T2 spinal nerves, sometimes C8 spinal nerve (C8, T1, T2 cord levels)

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26
Q

What muscles are classically identified as longissimus muscles?

A
  • longissimus thoracis
  • longissimus cervicis
  • longissimus capitis
27
Q

What osseous parts of the vertebral column serve as an origin to the longissimus thoracis?

A
  • accessory process and transverse processes of L1-L5
  • spinous processes of L3-L5
  • median sacral crest S1-S3
28
Q

What non-vertebral column site serves as an origin to the longissimus thoracis?

A

posterior superior iliac spine (PSIS) of the innominate bone

29
Q

What is the insertion for the longissimus thoracis?

A
  • transverse tubercle of all thoracic segments

- between tubercle and costal angle of the lower 9-10 ribs (rib 2 or 3 to rib 12)

30
Q

Which erector spinae muscle is attached to the accessory process?

A

longissimus thoracis

31
Q

Contraction of the longissimus thoracis will result in what movements of the vertebral column?

A
  • lateral flexion of the thoracic spine (lumbar spine inadvertently)
  • bilaterally acts to extend thoracic and lumbar spine
  • holds thoracic and lumbar spine erect
  • increases the lumbar lordotic curve
  • lateral pelvic movement
32
Q

What is the innervation of longissimus thoracis?

A

dorsal rami of all thoracic and lumbar spinal nerves (cord levels T1-T12, L1-L5)

33
Q

What muscles are identified as subdivisions within the longissimus thoracis muscle?

A
  • longissimus thoracis pars lumborum

- longissimus thoracis pars thoracis

34
Q

What osseous parts of the vertebral column serve as an origin to the longissimus thoracis pars lumborum?

A

accessory process and medial part of transverse process of L1-L5

35
Q

What is the insertion for the longissimus thoracis pars lumborum?

A

posterior superior iliac spine (PSIS) of the innominate bone

36
Q

Contraction of longissimus thoracis pars lumborum will result in what movements?

A
  • lateral flexion of lumbar spine
  • bilaterally extend lumbar spine
  • increase lumbar lordotic curve
37
Q

What osseous parts of the vertebral column serve as an origin to the longissimus thoracis pars thoracis?

A
  • spinous processes of L3-L5

- median sacral crest S1-S3

38
Q

What non-vertebral column common site serves as an origin to the longissimus thoracis pars thoracis?

A

posterior superior iliac spine (PSIS) of the innominate bone

39
Q

What is the insertion for the longissimus thoracis pars thoracis?

A
  • transverse process of all thoracics

- between tubercle and costal angle of all ribs

40
Q

Contraction of longissimus thoracis pars thoracis will result in what movements?

A
  • lateral flexion of thoracic spine (lumbar spine inadvertently)
  • bilaterally extend thoracic spine (lumbar spine inadvertently)
41
Q

Which subdivision of the longissimus muscle appears to have a reversal of origin-insertion?

A

longissimus thoracis pars lumborum

42
Q

What osseous parts of the vertebral column serve as an origin to the longissimus cervicis?

A

transverse tubercles of T1-T5 or T6

43
Q

What osseous parts of the vertebral column serve as an insertion for the longissimus cervicis?

A
  • posterior tubercle of transverse processes from C2-C6 or C7
  • articular processes from C2-C6 or C7
44
Q

Contraction of longissimus cervicis will result in what movements?

A
  • lateral flexion of the neck

- bilaterally act to extend neck

45
Q

What is the innervation of longissimus cervicis?

A

dorsal rami of C4-C8 and T1-T2 spinal nerves (C4-C8 and T1-T2 cord levels)

46
Q

What osseous parts of the vertebral column serve as an origin to the longissimus capitis?

A
  • transverse tubercle of T1-T5

- articular processes of C4-C7

47
Q

What is the insertion for longissimus capitis?

A

mastoid process of temporal bone

48
Q

Contraction of longissimus capitis will result in what movements?

A
  • lateral flexion and rotation of head

- bilaterally act to extend head

49
Q

What is the innervation of longissimus capitis?

A

dorsal rami of C1-C3 or C4 spinal nerves (C1-C3 or C4 cord levels)

50
Q

Which erector spinae muscles attach to cervical articular processes?

A
  • longissimus cervicis

- longissimus capitis

51
Q

What muscles are classically identified as spinalis muscles?

A
  • spinalis thoracis
  • spinalis cervicis
  • spinalis capitis
52
Q

What osseous parts of the vertebral column serve as an origin to the spinalis thoracis?

A

spinous processes of T11-L2

53
Q

What is the insertion for spinalis thoracis?

A

spinous process of T1-T4 or as low as T8

54
Q

Contraction of spinalis thoracis will result in what movements?

A

extension of the thoracic spine

55
Q

What is the innervation of spinalis thoracis?

A

dorsal rami of all thoracic and upper lumbar nerves

56
Q

What osseous parts of the vertebral column serve as an origin to the spinalis cervicis?

A

spinous process of C7 and T1-T6

57
Q

What osseous parts of the vertebral column serve as an insertion for the spinalis thoracis?

A

spinous processes from C2-C4

58
Q

Contraction of spinalis cervicis will result in what movements?

A
  • lateral flexion and rotation of the cervical spine

- bilaterally act to extend neck

59
Q

What is the innervation of spinalis cervicis?

A

dorsal rami of all cervical spinal nerves (C1-C8 cord levels)

60
Q

What osseous parts of the vertebral column serve as an origin to the spinalis capitis?

A

spinous process of C7 and T1-T6 or T7

61
Q

What is the insertion for the spinalis capitis?

A

below the superior nuchal line of the occipital bone

62
Q

Contraction of spinalis capitis will result in what movements?

A
  • lateral flexion and rotation of the head

- bilaterally act to extend head

63
Q

What is the innervation of spinalis capitis?

A

dorsal rami of lower cervical and upper thoracic spinal nerves

Spinal Anatomy I - Exam 3 (94 decks)

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