Move head and vertebral column

Question 1

sterno-cleidomastoid

Answer 1

2 headed muscle deep to platysma 
O-manubrium
I mastoid process 
A- moves head toward opposite shoulder 
N-spinal accesory

Question 2

Splenius (bandage muscle)

Answer 2

broad 2 part superficial extends from upper thoracic to skull
O- ligamentum nuchaespinous process of (C7-T6)
I- occipital bone
A- hold down deep neck muscles extend head
N-cervical spinal

Question 3

Semi spinalis

Answer 3

forms part of deep layer of back muscles
O-transverse process of C7-T12
I- occipital bone, spinous process of cervical and thoracic vertebrae
A- extends vertebral column and head 
N- ervical and thoracic spinal nerves

Question 4

erector spinae muscles

Answer 4

prime mover of back extension

Question 5

Iliocostalis

Answer 5

most lateral group of erector spinae musles
O-illiac cres
I ribs
A- extend vertebral column maintain posture
Spinal nerves

Question 6

longissimus

Answer 6

intermediate group of erector spnae muscles
O-transverse process of lumbar through cervical vertebrae
I- ribs superior to origin
A- extend vertebral column
N- spinal nerves

Question 7

spinalis

Answer 7

most medial of erector spinae 
O-spines of lumbar and thoracic vertebrae 
I- spines of thoracic and cervical vert.
A- extend vertebral column
N-spinal nerves