Blood vessels that deliver oxygen-rich blood from the heart to the tissues of the body.
Blood vessels vasculature works with the heart to supply the body with oxygen and nutrients and to remove waste products.
Valves are actually flaps that act as one-way inlets for blood coming into a ventricle and one-way outlets for blood leaving a ventricle.
They are the smallest blood vessels in the body.
It is the hollow opening or the space inside the blood vessel.
It is a closed circulatory system, blood is contained inside blood vessels.
Blood enters the heart through it.
Focus on the reason.
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