Answer:
Explanation:
contract the ciliary body
With less blood flow, your heart doesn't get the oxygen it needs, and that can cause chest pain, called angina, especially when you exercise or do heavy labor. It also can affect how well your heart pumps and make the rest of your body short on oxygen, too
Explanation:
Answer:
The blood circulatory system, also called the cardiovascular system, consists of the heart and the blood vessels that run throughout the body
My best answer would be A
