|Vein: Basivertebral veins|
|Transverse section of a thoracic vertebra, showing the vertebral venous plexuses (basivertebral veins labeled as Vena Basi-verteb at bottom center)|
|Median sagittal section of two thoracic vertebrae, showing the vertebral venous plexuses (basivertebral veins labeled as Vena Basi-Vert at bottom right)|
|Gray's||subject #172 668|
The basivertebral veins are veins within the vertebral column. They are contained in large, tortuous channels in the substance of the bones, similar in every respect to those found in the diploë of the cranial bones.
They communicate through small openings on the front and sides of the vertebral bodies with the anterior external vertebral plexuses, and converge behind to the principal canal, which is sometimes double toward its posterior part, and open by valved orifices into the transverse branches which unite the anterior internal vertebral plexuses.
The basivertebral veins become greatly enlarged in advanced age.
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