Venous Return
Venous Return
Venous return (VR) is the flow of blood back to the heart. Under steady-state specifies, venous return must adequate cardiac output (CO) when calculated over time because the cardiovascular system is basically a closed loop. Otherwise, blood would collect in either the systemic or pulmonary circulations. Although cardiac output and venous return are interdependent, each can be severally influenced.
When the heart contracts, it leaves blood from the lower chambers, or ventricles. The closed valves amongst the ventricles and the atria are ripped downward. This gains the number of space in the atria and blood is attracted into them from the great veins extending into the heart. Venous return gains and if the heart beats faster, the effect gets greater.
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