Final 3 Transversospinalis Musculature Flashcards Preview

Spinal Anatomy (Mine) > Final 3 Transversospinalis Musculature > Flashcards

Flashcards in Final 3 Transversospinalis Musculature Deck (12)
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1
Q

Which muscles are identifies as transversospinalis muscles?

A

semispinalis, multifidis, rotators

2
Q

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

A

as many as nine vertebrae

3
Q

Contraction of semispinalis thoracis will result in what movements?

A

extension, later flexion and rotation of upper thoracic and lower cervical spine, bilaterallly they act to extend the thoracic spine

4
Q

What is the innervation of the semispinalis thoracis?

A

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

5
Q

What is the innervation of the semispinalis cervicis?

A

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

6
Q

What is the innervation of the semispinalis capitis?

A

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

7
Q

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

A

biventer cervicis

8
Q

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

A

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

9
Q

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

A

multifidis

10
Q

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

A

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

11
Q

Which muscles of the spine exhibit a reversal of the expected origin-insertion combination?

A

iliocostalis lumborum pars lumborum, longissimus thoracic pars lumborum and multifidis lumborum

12
Q

Rotator muscles are typically identified in what region of the spine?

A

the thoracic region