Transversospinalis Musculature Flashcards
How many vertebrae can be attached to a single segment by transversospinalis muscles?
as many as nine vertebrae
What segment will represent the lowest attachment site for the semispinalis thoracis?
T12
What is the innervation of the semispinalis thoracis?
dorsal rami of T1-T6 spinal nerves (cord levels T1-T6)
What osseus parts of the vertebral column serve as an origin to the semispinalis cervicis?
Transverse tubercles of T1-T5 or T6 and articular processes of C4-C7
What is the innervation of semispinalis cervicis?
dorsal rami of C6-C8 spinal nerves (cord levels C6-C8)
What osseus parts of the vertebral column serve as an origin to the semispinalis capitis?
transverse tubercles of C7, T1-T6 or T7 and articular processes of C4-C6
What is the innervation of the semispinalis capitis?
dorsal rami of C1-C6 spinal nerves (cord levels C1-C6)
What osseus parts of the vertebral column serve as an origin to the classic multifidus?
articular process of C4-C7, transverse processes of T1-T12, mammillary processes of L1-L5 and the dorsal surface of S1-S4 or S5
Which transversospinalis muscle attaches to articular and mammillary processes along the spine?
multifidus
What is the innervation of the classic multifidus?
dorsal rami C3-C8, T1-T12, L1-L5 and S1 spinal nerves
Contraction of multifidus 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, and is a significant contributor to postural control of the head and neck
Contraction of multifidus lumborum will result in what movements?
lateral flexion and rotation of the lumbar spine, maintains the lumbar lordotic curve, and prevents entrapment of lumbar zygapophyseal capsular ligament during movement
Which muscles of the spine exhibit a reversal of the expected origin-insertion combination?
iliocostalis lumborum pars lumborum, longissimus thoracis pars lumborum, and multifidus lumborum
