Transversospinalis Musculature Flashcards
which muscles are identified as transversospinalis muscles?
semispinalis, multifidus and rotators
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 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
what osseous parts of the vertebral column serve as an origin to the semispinalis capitis?
transverse tubercle of C7, T1-T6 or T7 & articular processes of C4-C6
the semispinalis capitis and spinalis capitis may fuse to form what muscle?
biventer cervicis
what osseous 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
contraction of the classic multifidus will result in what movement of the vertebral column?
lateral flexion & rotation of the spine, maintains the lumbar lordotic curve and prevents entrapment of zygapophyseal capsular ligament during movement
contraction of multifidus cervicis will result in what movement?
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 & 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 thoracic pars lumborum and multifidus lumborum
rotator muscles are typically identified in what region of the spine?
the thoracic region
