The intertransversarii together with the interspinales form one group of segmental muscles deep within the back.
The second group of segmental muscles is the levatores costarum muscles.
Origin
- Small muscles between the transverse processes of contiguous vertebrae C1-C7; T9-12;L1-5
Insertion
- Transverse processes as described in the origin
Action
- Proprioceptive functions during movement
Innervation
- Dorsal rami of spinal nerves
Blood Supply
- Lumbar arteries
- Dorsal branches of the posterior intercostal arteries
- Occipital artery