Intervertebral veins
Template:ContradictTemplate:Short description Script error: No such module "Infobox".Template:Template otherScript error: No such module "Check for unknown parameters".Script error: No such module "Check for unknown parameters". The intervertebral veins accompany the spinal nerves through the intervertebral foramina to drain the internal vertebral venous plexuses into the external vertebral venous plexuses.[1] They drain (in craniocaudal sequence) into vertebral vein, intercostal veins, lumbar veins, and lateral sacral veins. Upper posterior intercostal veins may additionally drain via brachiocephalic vens. They may drain to ascending lumbar veins. They may drain into the inferior vena cava directly, reaching it by winding around the surface of the vertebral body.[2]
It is unclear whether intervertebral veins contain functional venous valves; blood flow through intervertebral veins may be reversible, suggesting a possible mechanism for metastatic spread of e.g. prostatic cancer to the spine during temporary blood flow reversals (e.g. during periods of elevated intra-abdominal pressure or during postural alterations).[2]
Anatomy
Fate
Their drainage depends upon the part of the body:
- Cervical region: vertebral veinScript error: No such module "Unsubst".
- Thoracic region: intercostal veinsScript error: No such module "Unsubst".
- Lumbar region: lumbar veinsScript error: No such module "Unsubst".
- Sacral region: lateral sacral veinsScript error: No such module "Unsubst".
References
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External links
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