Vena intervertebralis

Vena Intervertebralis is a term used in anatomy to refer to the veins that are located between the vertebrae of the spine. These veins play a crucial role in the circulatory system, carrying deoxygenated blood from the spinal region back to the heart.

Anatomy

The vena intervertebralis, also known as the intervertebral vein, is part of the vertebral venous plexus, a network of veins that surrounds the vertebral column. This plexus is divided into internal and external sections, with the vena intervertebralis being part of the internal section.

The vena intervertebralis drains blood from the spinal cord and its surrounding structures, including the meninges, the protective layers of tissue that surround the spinal cord.

Function

The primary function of the vena intervertebralis is to transport deoxygenated blood from the spinal region back to the heart. This is a crucial part of the body's circulatory system, as it ensures that all tissues and organs receive the oxygen and nutrients they need to function properly.

In addition to this primary function, the vena intervertebralis also plays a role in the regulation of intracranial pressure. This is because the veins in the vertebral venous plexus are valveless, allowing blood to flow in both directions. This can help to balance the pressure within the skull when changes in body position or other factors cause it to fluctuate.

Clinical Significance

Due to its location and function, the vena intervertebralis can be involved in a number of medical conditions. For example, thrombosis (the formation of a blood clot within a vein) can occur in the vena intervertebralis, potentially leading to serious complications such as stroke or spinal cord injury.

Furthermore, because the vena intervertebralis is part of the vertebral venous plexus, it can serve as a route for the spread of cancer cells from the pelvic region to the spine and brain. This is known as metastasis, and it is one of the ways in which cancer can become more difficult to treat.