Tag: Venous valves

The human circulatory system, a complex network of vessels, contains one-way valves that ensure blood flows in a single direction. To understand **what valve is used to prevent reverse flow**, one must look at the crucial roles these structures play in both the heart and the veins, maintaining the body's efficient blood flow.

Approximately 70% of the body's blood volume is in the venous system, making the skeletal muscle pump a critical accessory mechanism for aiding the heart in circulation. This powerful process, essential for general health, supports venous return, especially in the extremities, and prevents blood from pooling against gravity.