Problem:
Question 1: Why is pressure a sensible reading to measure circulatory health?
Question 2: Explain the "lub-dub" sounds of the heartbeat.
Question 3: Why do blood pressure and heart rate change after exercise?
Question 4: Why is it important for blood to flow in only one direction?
Question 5: What is the process that is responsible for moving molecules from an area of high concentration to an area of low concentration? In what part of the circulatory system does this happen?
I dont need long explanation. Just few sentences of expanation.