Venous return refers to the flow of deoxygenated blood from the body back to the heart, primarily through the superior and inferior vena cavae. It is crucial for maintaining cardiac output and ensuring adequate tissue perfusion; impaired venous return can lead to conditions such as heart failure or shock. One key association is the role of venous valves and muscle pump action, which facilitate this return and prevent venous stasis, highlighting its importance in circulatory health.

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