Transversospinalis Musculature Flashcards Preview

Spinal Anatomy I - Exam 3 > Transversospinalis Musculature > Flashcards

Flashcards in Transversospinalis Musculature Deck (48)
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1

Which muscles are identified as transversospinalis muscles?

- semispinalis
- multifidis
- rotators

2

Transversospinalis muscles represent what layer of the true back?

layer 5

3

Based on the name of this group, what is the origin-insertion of the transversospinalis?

- transverse process origin
- spinous process insertion

4

How many vertebrae can be attached to a single segment by transversospinalis muscles?

as many as nine vertebrae

5

What muscles are classically identified as semispinalis muscles?

- semispinalis thoracis
- semispinalis cervicis
- semispinalis capitis

6

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

transverse tubercles of T6-T10 or as low as T12

7

What segment will represent the lowest attachment site for the semispinalis thoracis?

T12

8

What is the insertion for the semispinalis thoracis?

spinous processes of C6-C6 and T1-T4

9

Contraction of the semispinalis thoracis will result in what movements?

- extension, lateral flexion, and rotation of upper thoracic and lower cervical spine
- bilaterally they act to extend the thoracic spine

10

What is the innervation of the semispinalis thoracis?

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

11

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

- transverse tubercles of T1-T5 or T6
- articular processes of C4-C7

12

What is the insertion for the semispinalis cervicis?

spinous processes of C2-C5

13

Contraction of the semispinalis cervicis will result in what movements?

- extension, lateral flexion, and rotation of the cervical spine
- bilaterally they act to extend the neck

14

What is the innervation of the semispinalis cervicis?

dorsal rami of C6-C8 spinal nerves (cord levels C6-C8)

15

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

- transverse tubercles of C7, T1-T6 or T7
- articular processes of C4-C6

16

What is the insertion for the semispinalis capitis?

below the superior nuchal line of occipital bone

17

Contraction of the semispinalis capitis will result in what movements?

- turns the face to the ipsilateral side of rotation
- bilaterally they act to extend the head (the neck inadvertently)

18

What is the innervation of the semispinalis capitis?

dorsal rami of C1-C6 spinal nerves (cord levels C1-C6)

19

The semispinalis capitis and spinalis capitis may fuse to form what muscle?

biventer cervicis

20

What regional subdivisions are now identified with the multifidis muscles? What are their Latin names?

- lumbar multifidis - multifidis lumborum
- thoracic multifidis - multifidis thoracis
- cervical multifidis - multifidis cervicis

21

What osseous parts of the vertebral column serve as an origin to the classic multifidis?

- articular process of C4-C7
- transverse processes of T1-T12
- mammillary processes of L1-L5
- dorsal surface of S1-S4 or S5

22

What non-vertebral column site serves as an origin to the classic multifidis?

posterior superior iliac spine (PSIS) of the innominate bone

23

What is the insertion for the classic multifidis?

spinous process of 3-5 segements above the origin

24

What transversospinalis muscle attaches to articular and mammillary processes along the spine?

multifidis

25

Contraction of the classic multifidis will result in what movements of the vertebral column?

- lateral flexion and rotation of the spine
- maintains the lumbar lordotic curve
- prevents entrapment of zygapophyseal capsular ligament during movement

26

What is the innervation of the classic multifidis?

dorsla rami of C3-C8, T1-T12, L1-L5 and S1 spinal nerves (cord levels C3-C8, T1-T12, L1-L5, and S1)

27

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

articular process of C4-C7

28

What is the attachment site and most cranial vertebra of insertion for the multifidis?

spinous process of C2

29

Contraction of multfifidis cervicis will result in what movements?

- alters the zygapophyseal capsular ligament response to load distribution
- determines the cervical spine response to injury as evidenced by neck pain
- a significant contributor to postural control of the head and neck

30

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

spinous processes of L1-L5

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