spinal branches

spinal branches

[TA]
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.
Synonym(s): rami spinales (1) [TA], spinal arteries

spi·nal branch·es

(spī'năl branch'ĕz) [TA]
Branches of the following arteries that supply 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.
References in periodicals archive ?
The mechanisms triggering haemorrhage into the retropharyngeal space are thought to be due to injury to the longus colli muscles on the anterior surface of the vertebral bodies, the anterior longitudinal ligament or the anterior muscular and spinal branches of the vertebral artery (3).
The vascular supply to the spinal cord is derived from two sources: arteries from the vertebral system superiorly, and spinal branches of the aorta, subclavian and iliac arteries inferiorly.