Erector Spinae (Sacrospinalis) Flashcards
(15 cards)
Which muscles are identified as erector spina or sacrospinalis muscles?
iliocostalis, longissimus, spinalis
What is the innervation of the iliocostalis lumborum?
dorsal rami of lower T and all L spinal nerves
Which subdivision of the iliocostalis primarily originates & inserts on ribs?
iliocostalis thoracis
What is the innervation of the iliocostalis thoracis?
dorsal rami of upper 6 thoracic spinal nerves (T1-T6 cord levels)
What is the insertion for the iliocostalis cervicis?
posterior tubercle of transverse process (C3), 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 spina muscle is attached to the accessory process?
longissimus thoracis
What is the innervation of the longissimus thoracis?
dorsal rami of all thoracic & 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 & 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 spina muscles attach to cervical articular processes?
longissimus cervicis & longissimus capitis
What osseous parts of the vertebral column serve as an origin to the spinals thoracis?
spinous processes of T11 & T12, L1 & L2
What is the innervation of the spinals thoracis?
dorsal rami of all thoracic & upper lumbar spinal nerves
What is the innervation of the spinals cervicis?
dorsal rami of all cervical spinal nerves (C1-C8 cord levels)
What is the innervation of the spinals capitis?
dorsal rami of lower cervical & upper thoracic spinal nerves
