Vena Vertebralis Accessoria is a medical term used to define an anatomical structure found in the human body. It refers to an accessory vertebral vein, which is a supplementary or secondary blood vessel that runs parallel to the main vertebral veins within the vertebral column.
The vertebral veins are responsible for draining blood from the spinal cord and surrounding tissues. However, in some individuals, an additional vein, known as the vena vertebralis accessoria, can be present. This vein usually runs alongside the main vertebral veins, duplicating their function to assist in the drainage of blood from the spine.
The vena vertebralis accessoria can vary in size and location, and its presence is considered to be a natural anatomical variation rather than a pathologic condition. It typically accompanies the main vertebral veins, following a similar path through the spinal column, often branching off from the main vertebral plexus at various levels.
The function of the vena vertebralis accessoria is to help ensure efficient blood circulation within the spinal cord by providing an additional drainage pathway. Although its significance may be limited, understanding the presence and characteristics of the vena vertebralis accessoria is important for medical professionals in procedures such as venography and certain surgical interventions involving the vertebral column.
In summary, vena vertebralis accessoria refers to an accessory vertebral vein found in humans, which runs parallel to the main vertebral veins and assists in the drainage of blood from the spinal cord.
