Median sacral vein

Median sacral vein

The Median sacral vein is a blood vessel that drains the sacrum and coccyx in the human body. It is a counterpart to the median sacral artery and is part of the venous system.

Etymology

The term "median" comes from the Latin "medianus", meaning "in the middle". "Sacral" is derived from the Latin "sacer", meaning "sacred". This is because the sacrum was considered the part of the body where the soul resides. The term "vein" comes from the Latin "vena", which means "blood vessel".

Anatomy

The median sacral vein begins at the dorsal surface of the fifth segment of the sacrum, where it is connected to the lumbar veins and the lateral sacral veins. It runs in the middle line in front of the sacrum and ends in the left side of the vena cava, where it forms a common trunk with the left common iliac vein.

Function

The median sacral vein drains the sacrum and coccyx, carrying deoxygenated blood from these areas back to the heart. It is an important part of the body's venous system, which is responsible for returning blood to the heart after it has delivered oxygen and nutrients to the body's tissues.

Clinical significance

Due to its location and function, the median sacral vein can be involved in various medical conditions. For example, it can be affected by thrombosis, a condition in which a blood clot forms in a vein. It can also be involved in varicose veins, a condition in which veins become enlarged and overfilled with blood.

Related terms

• Venous system: The network of blood vessels that carry blood back to the heart.
• Sacrum: A large, triangular bone at the base of the spine.
• Coccyx: The final segment of the vertebral column, also known as the tailbone.

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  Gray's Anatomy illustration of the median sacral vein