erector spinae (sacrospinalis)

Question 1

Which muscles are identified as erector spinae or sacrospinalis muscles?

Answer 1

iliocostalis, longissimus, spinalis

Question 2

what is the innervation of the iliocostalis lumborum?

Answer 2

dorsal rami of lower thoracic and all lumbar spinal nerves

Question 3

what osseous parts of the vertebral column serve as an origin to the iliocostalis thoracis?

Answer 3

none

Question 4

what is the insertion for the iliocostalis thoracis?

Answer 4

costal angles of the upper 6-7 ribs, transverse process of C7

Question 5

what osseous parts of the vertebral column serve as an origin to the longissimus thoracis?

Answer 5

accessory process and transverse processes of L1-L5, spinous processes of L3-L5 and median sacral crest S1-S3

Question 6

What is the innervation of the longissimus cervicis?

Answer 6

dorsal rami of C4-C8 and T1-T2 spinal nerves (C4-C8 & T1-T2 cord levels)

Question 7

what osseous parts of the vertebral column serve as an origin to the spinalis thoracis?

Answer 7

spinous processes of T11 & T12 - L1 & L2