What percentage of venous volume is ejected through the thigh muscle pump?

The correct percentage of venous volume ejected through the thigh muscle pump is 15%. This figure reflects the significant role that the thigh's muscles play in venous return during activities such as walking or running.

When the muscles contract during movement, they exert pressure on the deep veins in the thighs, facilitating the upward movement of venous blood towards the heart, which is crucial for maintaining proper circulation. This phenomenon is particularly effective in larger muscles like those in the thigh, which can generate sufficient force to push a notable percentage of the total venous volume.

Understanding this concept is integral for professionals in phlebology, as it highlights the importance of muscle pump activity in preventing venous stasis, which can lead to complications like venous insufficiency or thrombosis. The muscle pump mechanism demonstrates how physical activity plays a vital role in venous circulation, indicating that encouraging patients to remain active can support venous health.