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explain the venous drainage of the spinal cord and the vertebral column
-Drainage of the vertebral column:
-via the vertebral venous plexuses. The internal vertebral venous plexus runs the length of the entire vertebral canal; it receives venous blood from the spinal cord and the vertebral bodies. The vertebral body of each vertebra contains erythropoietic bone marrow;
newly formed red blood cells are transported from each vertebral body into the circulation via two basivertebral veins from each vertebra.
All of the veins in the internal vertebral venous plexus are valveless. Veins from the internal vertebral venous plexus pass through each intervertebral foramen to drain into the external vertebral venous
- external venous plexus drains into larger veins of thorax, abdomen and neck
-via the vertebral venous plexuses. The internal vertebral venous plexus runs the length of the entire vertebral canal; it receives venous blood from the spinal cord and the vertebral bodies. The vertebral body of each vertebra contains erythropoietic bone marrow;
newly formed red blood cells are transported from each vertebral body into the circulation via two basivertebral veins from each vertebra.
All of the veins in the internal vertebral venous plexus are valveless. Veins from the internal vertebral venous plexus pass through each intervertebral foramen to drain into the external vertebral venous
- external venous plexus drains into larger veins of thorax, abdomen and neck
