Question

What is the force that allows blood to flow from the aorta to the capillaries and...

What is the force that allows blood to flow from the aorta to the capillaries and back to the vena cava (right atrium)?

a.The valves in the heart.
b.The contraction of the atria.
c.The position of the body.
d.Gravity.
e.The pressure gradient from left to right.
Science   Anatomy-And-Physiology   
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Answer #1

Answer: pressure gradient from left to right.

Explanation:

so, pressure gradient helps in the flow of blood from atrium, arteries,veins and venacava.

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