Ascending lumbar vein

Ascending Lumbar Vein

The ascending lumbar vein as seen in Gray's Anatomy.

The Ascending Lumbar Vein is a significant vein in the human anatomy that plays a crucial role in the venous system. It is located in the lumbar region of the body and ascends vertically to join the subcostal vein and form the azygos vein on the right side and the hemiazygos vein on the left side.

Structure

The ascending lumbar vein begins in the lateral sacral veins and ascends in the posterior abdominal wall, lying posterior to the psoas major muscle. It communicates above with the subcostal veins and below with the common iliac vein.

Function

The ascending lumbar vein serves as a significant pathway for the return of blood from the lower half of the body to the heart. It also provides an alternative route for blood flow when the inferior vena cava is blocked.

Clinical significance

Knowledge of the ascending lumbar vein is essential in various surgical procedures involving the lumbar region. Its location and connections can also be significant in conditions such as deep vein thrombosis and varicose veins.

See also

• Vein
• Lumbar vertebrae
• Venous system

References

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