Minor Deep Intrinsic Back Muscles

Question 1

interspinales

Answer 1

O:
- superior spinous process of cervical + lumbar
I:
- inferior spinous process of cervical + lumbar
N:
- posterior rami of spinal nerves
A:
- aid in extension + rotation of VC

Question 2

intertransversarii

Answer 2

O:
- transverse process of cervical + lumbar vertebrae
I:
- transvere process of adjacent vertebrae
N:
- posterior & anterior rami of spinal nerves
A:
- aid in lateral flexion
- bilaterally = stabilize vertebral column

Question 3

levatores costarum

Answer 3

O:
- transverse process C7-T11
I:
- insert on ribs
N:
- posterior rami
A:
- elevate ribs
- assist w/ respiration
- assist w/ lateral flex of vertebral column