Transversospinalis Musculature

Question 1

Which muscles are identified as transversospinalis muscles?

Answer 1

semispinalis, multifidus, and rotators

Question 2

Transversospinalis muscles represent what layer of the true back?

Answer 2

layer five

Question 3

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

Answer 3

transverse process origin; spinous process insertion

Question 4

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

Answer 4

as many as nine vertebrae

Question 5

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

Answer 5

T12

Question 6

What is the innervation of the semispinalis thoracis?

Answer 6

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

Question 7

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

Answer 7

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

Question 8

What is the innervation of the semispinalis cervicis?

Answer 8

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

Question 9

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

Answer 9

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

Question 10

What is the innervation of the semispinalis capitis?

Answer 10

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

Question 11

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

Answer 11

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

Question 12

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

Answer 12

multifidus

Question 13

What is the innervation of the classic multifidus?

Answer 13

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

Question 14

Contraction of the multifidus cervicis will result in what movements?

Answer 14

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

Question 15

Contraction of multifidus lumborum will result in what movements?

Answer 15

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

Question 16

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

Answer 16

iliocostalis lumborum pars lumborum, longissimus thoracis pars lumborum and multifidus lumborum