Final 2 Erector spinae Flashcards
Which muscles are identified as erector spinae or sacrospinalis muscles?
iliocostalis, longissimus, spinalis
What is the innervation of the iliocostalis lumborum?
dorsal rami of lower thoracic and all lumbar spinal nerves
Which subdivision of the iliocostalis primarily originates and inserts on ribs?
iliocostalis thoracis
What is the innervation of the iliocostalis thoracis?
dorsal rami of upper 6 thoracic spinal nerves (T1-T6)
What is the insertion for the iliocostalis cervicis?
posterior tubercle of transverse process of C(3) C4-C6
What is the innervation of the iliocostalis cervicis?
dorsal rami of T1, T2 spinal nerves, sometimes C8 spinal nerve (C8, T1, T2 cord levels)
Which erector spinae muscle is attached to the accessory process?
longissimus thoracis
What is the innervation of the longissimus thoracis?
dorsal rami of all thoracic and lumbar spinal nerves (cord levels T1-T12, L1-L5)
What is the innervation of the longissimus cervicis?
dorsal rami of C4-C8 and T1-T2 spinal nerves (C4-C8 and T1-T2 cord levels)
What is the innervation of the longissimus capitis?
dorsal rami of C1-C3 or C4 spinal nerves, (C1-C3 or C4 cord levels)
Which erector spinae muscles attach to cervical articular processes?
longissimus cervicis ad longissimus capitis
What osseous parts of the vertebral column serve as an origin to the spinalis thoracis?
spinous processes of T11 and T12-L1 and L2
What is the innervation of the spinalis thoracis?
dorsal rami of all thoracic and upper lumbar spinal nerves
What is the innervation of the spinalis cervicis?
dorsal rami of all cervical spinal nerves (C1-C8 cord levels)
What is the innervation of the spinalis capitis?
dorsal rami of lower cervical and upper thoracis spinal nerves
