Have flat bases and are often described as "puffy", "cotton-like" or "fluffy" in appearance.
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blood flows at a high pressure, so if the arteries are thin and less muscular, the arteries can explode due to the pressure. so it needs thick and muscular properties so that it can withstand the increasing pressure of the flow of blood.
im not sure why it needs to be elastic. Hope it helped :)
Answer:
The circulatory system, also known as the cardiovascular system, is a simple loop which starts, and ends, with your heart. It is a closed system, meaning blood does not enter or leave the system during its journey from your heart to your body and back again.
Explanation:
B. Nitrogen oxygen, Oxygen, and argon
The National Institutes of Health found it effective in reducing pain and other symptoms, but it is not clear how it works.