Question

Return of blood to the heart is not facilitated by

Answer 1

venous pressure
is the answer to your question

Answer 2

Answer:

Return of blood to the heart is not facilitated by gravitational increase in arterial pressure.

Explanation:

• Blood returning to the heart is referred to as venous return (VR). Since the cardiovascular system is essentially a closed loop, venous return must match cardiac output (CO) under steady-state circumstances.
• Otherwise, either the pulmonary or systemic circulations would get clogged with blood. Despite their interdependence, cardiac output and venous return can each be controlled separately.
• A pressure gradient controls the hemodynamics of venous return (VR) from the venous vascular beds to the heart.
• As seen in the image, the circulatory system is made up of the pulmonary and systemic circulations, which are positioned in series between the right and left ventricles. The Frank-Starling mechanism plays a significant role in maintaining equilibrium.

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