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 part of the vertebral column serve as an origin to the iliocostalis thorasic

Answer 3

none

Question 4

What is the insertion for the iliocostalis thorasic

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

Assessory procress and transverse processes of L1-L5
Spinous processes of L3-L5
median sacral crest S1-S3

Question 6

What is the innervation of the longissimus cervicis

Answer 6

Dorsal rami of C4-C8 and T1-T12 spinal nerves (C4-8 T1-12 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