X. Erector Spinae (Sacrospinalis Musculature) Flashcards Preview

Spinal Exam 3 ZK > X. Erector Spinae (Sacrospinalis Musculature) > Flashcards

Flashcards in X. Erector Spinae (Sacrospinalis Musculature) Deck (16)
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1
Q

Which muscles represent the fourth layer of the true back?

A

the erector spinae or sacrospinalis muscles

2
Q

Which muscles are identified as erector spinae or sacrospinalis muscles?

A

iliocostalis, longissimus, spinalis

3
Q

What muscles are classically identified as iliocostalis muscles?

A

iliocostalis lumborum, iliocostalis thoracis, and iliocostalis cervicis

4
Q

What is the innervation of the iliocostalis lumborum?

A

dorsal rami of lower thoracic and all lumbar spinal nerves

5
Q

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

A

transverse process of C7

6
Q

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

A

iliocostalis thoracis

7
Q

What is the innervation of the iliocostalis thoracis?

A

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

8
Q

What is the innervation of the iliocostalis cervicis?

A

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

9
Q

Which erector spinae muscle is attached to the accessory process?

A

longissimus thoracis

10
Q

What is the innervation of the longissimus thoracis?

A

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

11
Q

What is the innervation of the longissimus cervicis?

A

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

12
Q

What is the innervation of the longissimus capitis?

A

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

13
Q

Which erector spinae muscles attach to cervical articular processes?

A

longissimus cervicis and longissimus capitis

14
Q

What is the innervation of the spinalis thoracis?

A

dorsal rami of all thoracic and upper spinal nerves

15
Q

What is the innervation of the spinalis cervicis?

A

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

16
Q

What is the innervation of the spinalis capitis?

A

dorsal rami of lower cervical and upper thoracic spinal nerves

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