Author: Dr Peter de Souza
Last modified: 23 November 2023

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.


  • Small muscles between the transverse processes of contiguous vertebrae C1-C7; T9-12;L1-5


  • Transverse processes as described in the origin


  • Proprioceptive functions during movement


  • Dorsal rami of spinal nerves

Blood Supply

  • Lumbar arteries
  • Dorsal branches of the posterior intercostal arteries
  • Occipital artery