Topic: Body Transport System Subtopic: The Pulse
What is happening to heart?
Answer: If we put our hand over the chest, we can feel the beats produced by the heart. This is not due to the blood pressure passing through the vessels, but it is due to the contraction and relaxation, or pumping action of the heart.
- Why is cold caused?
- What is major component of respiration?
- What happen when we exhale?
- Why is iron important?
- What is chance of smokers of dying from bronchitis?
- What is blood?