Deepest

Question 1

What 2 groups are considered the deepest layer of the back?

Answer 1

Tranversospianles muscles ( rotators, multifidus, semispinalis group)
Segmental muscles ( interspinales, inttransversarii)

Question 2

What spinal nerves innervate this layer of the spine?

Answer 2

Dorsal rami of spinal nerves
* with the exception of intertransversarii which is innervated by both dorsal and ventral

Question 3

What muscles make up the transversospinales group?

Answer 3

1.) rotators
2.) multifidus
3.) semispinalis group ( thoracis, cercivis, capitis)