Intervertebral veins
Encyclopedia
The intervertebral veins accompany the spinal nerves through the intervertebral foramina
; they receive the veins from the medulla spinalis, drain the internal and external vertebral plexuses.
Their drainage depends upon the part of the body:
Their orifices are provided with valves.
Intervertebral foramina
When the spinal vertebrae are articulated with each other the bodies form a strong pillar for the support of the head and trunk, and the vertebral foramina constitute a canal for the protection of the medulla spinalis...
; they receive the veins from the medulla spinalis, drain the internal and external vertebral plexuses.
Their drainage depends upon the part of the body:
- neck: vertebral veinVertebral veinThe vertebral vein is formed in the suboccipital triangle, from numerous small tributaries which spring from the internal vertebral venous plexuses and issue from the vertebral canal above the posterior arch of the atlas....
- thorax: intercostal veinsIntercostal veinsThe intercostal veins are a group of veins which drain the area between the ribs , called the intercostal space.They can be divided as follows:* Anterior intercostal veins* Posterior intercostal veins...
- lumbar region: lumbar veinsLumbar veinsThe lumbar veins are veins running along the inside of the posterior abdominal wall. They are the lumbar equivalent of the posterior intercostal veins.-See also:* Posterior intercostal veins* Subcostal vein* Ascending lumbar vein...
- sacral region: lateral sacral veinsLateral sacral veinsThe lateral sacral veins accompany the lateral sacral arteries on the anterior surface of the sacrum and end in the hypogastric vein....
Their orifices are provided with valves.