The intertransversarii are a set of deep muscles of the back. Attachments: Originate from the transverse processes of cervical and lumbar vertebrae and insert onto the transverse processes of adjacent vertebrae. Actions: Unilateral – Contribute to lateral flexion of the vertebral column Bilateral – Stabilise the vertebral column. Innervation: Anterior rami of the spinal nerves Blood Supply: Cervical regions are supplied by the occipital, deep cervical, and vertebral arteries. Lumbar regions are supplied by the dorsal branches of lumbar arteries. Pro Feature - 3D Model You've Discovered a Pro Feature Access our 3D Model Library Explore, cut, dissect, annotate and manipulate our 3D models to visualise anatomy in a dynamic, interactive way. Learn More Print Article Rate This Article