Erector Spinae (Sacrospinalis) Flashcards
What muscles are identified as erector spinae or sacrospinalis muscles?
iliocostalis, longissimus, spinalis
What is the innervation of the iliocostalis lumborum?
dorsal lower rami of lower thoracic and all lumbar spinal nerves
What is the insertion for the iliocostalis thoracis?
costal angles of the upper 6-7 ribs, transverse process of C7
Which subdivision of the ilicostalis primarily originates & inserts on ribs?
iliocostalis thoracis
What is the innervation of the ilicostalis thoracis?
dorsal rami of the upper 6 thoracic spinal nerves (T1-T6)
What is the origin for the ilicostalis cervicis?
costal angles of the upper 3-6 ribs (ribs 1-3 or 3-6)
What is the insertion for the iliocostalis cervicis?
posterior tubercle of transverse process of C(3) C4-C6
What is the innervation of the illicostalis cervicis?
dorsal rami of T1, T2 spinal nerves, sometimes C8 spinal nerve (C8, T1, T2 cord levels)
What is the innervation of the longissimus thoracis?
dorsal rami of all thoracic and lumbar spinal nerves (cord levels T1-T12, L1-L5)
What osseous parts of the vertebral column serve as an insertion for thelongissimus cervicis?
posterior tubercle of transverse process from C2-C6 or C7, articular processes from C2-C6 or C7
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 and longissimus capitis
What is the innervation of the spinalis thoracis?
dorsal rami of all thoracic andupper lumbar spinal nerves
What is the innervation of the spinalis cervicis?
dorsal rami of all cervical spinal nerves (C1- C8 cord) levels)
