Skip to Content

spinal branches


Definition: branches of the following arteries and veins that supply and drain the meninges, the roots of the spinal nerves, and in some cases, the spinal cord: 1) vertebral, 2) ascending cervical, 3) dorsal branch of posterior intercostal I–XI, 4) dorsal branch of subcostal, 5) dorsal branch of lumbar arteries, 6) lumbar branch of iliolumbar, 7) lateral sacral; all spinal arteries give rise to arteries supplying dorsal and ventral roots of spinal nerves; most are exhausted in supplying the roots as radicular arteries, but some (4–9), are large enough to reach and anastomose with the anterior and posterior spinal arteries and are designated instead as segmental medullary arteries.

See: great segmental medullary artery, segmental medullary arteries, under artery

Synonym(s): rami spinales1TA, spinal arteries

Disclaimer: This site is designed to offer information for general educational purposes only. The health information furnished on this site and the interactive responses are not intended to be professional advice and are not intended to replace personal consultation with a qualified physician, pharmacist, or other healthcare professional. You must always seek the advice of a professional for questions related to a disease, disease symptoms, and appropriate therapeutic treatments.
© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.