Unit 2 - Muscles of Deep Back

Question 1

Which muscles make up the erector spinae muscles

Answer 1

Iliocostalis, Longissimus, Spinalis

Question 2

Bilateral of erector spinae muscles

Answer 2

Extend head and vertebral column

Question 3

Unilateral actions of erector spinae muscles

Answer 3

Lateral flexion of head and vertebral column

Question 4

What happens when the left erector spinae muscles contract?

Answer 4

Lateral flexion towards the left

Question 5

What happens when the right erector spinae muscles contract?

Answer 5

Lateral flexion to the right

Question 6

Innervation of erector spinae muscles

Answer 6

Dorsal rami of spinal n.