Question

Ravi ran 200 metres race in sports day. He feels that his heart was beating faster than usual. a) Why was his heart beating faster? b) Which all organs are involved along with the heart to help Ravi complete his race?

Answer 1

Answer:

(a) Reason for the heart beating fast:

• When we exercise/run the muscles work hard and need more oxygen.

• So, when Ravi's heart beats faster more blood can be pumped to the muscles thus giving the oxygen required.

(b) Organs involved along with the heart to help Ravi complete his race:

• The main organs involved along with the heart are quadriceps, hip flexors, hamstring, glutes and calf muscles.

• The nervous system, muscular system, skeletal system, respiratory system and circulatory system function effectively when a person runs.