Lumbar arteries

The lumbar arteries (Latin for " lumbar arteries ," Singular lumbar arteries ) are arteries of the hull in the area of the loin. They spring and segmental pairs from the abdominal aorta at the level of each lumbar vertebra. The number of lumbar arteries vary across mammalian species. In humans, five such pairs are formed normally, the last one already arises from the median sacral artery.

Each lumbar artery divides into a Rückenmarkast ( ramus spinalis), the intervertebral foramen by the pulls into the spinal canal and supplies the spinal cord, as well as a Rückenast ( ramus dorsalis) to supply the intrinsic back muscles in the loin. The spinal rami are by Längsanastomose, the anterior spinal artery ( in animals as ventral spinal artery called ), connected to each other.