Question

The table shows the heartbeat and pulse rate of two students while resting and after

running for 4 to 5 minutes. Write any 2 conclusions that can be drawn from the given

data?
(b) Why does blood not flow in opposite direction inside the heart,when the ventricle

contracts?​

Answer 1

Explanation:

Your heart is continuously beating to keep blood circulating throughout your body. Its rate changes depending on your activity level; it is lower while you are asleep and at rest and higher while you exercise—to supply your muscles with enough freshly oxygenated blood to keep the functioning at a high level.