Answer the following questions briefly.
1. The nutrients obtained from the food during digestion are supplied by the circulatory system to the
body. What does the circulatory system distribute to the body as it works with the respiratory system?
2. If solid and liquid wastes are removed from the body through defecation and urination, what is
released by the body as waste during respiration?
3. What happens to the diaphragm when a person breathes in or inhales?
4. Why is the human heart called a double pump?
will happen if oxygen is not transported by the blood to the different parts of the body?
5. What
6. Since the valves act as the doors of the heart, what might happen if these doors do not close?
7. When we breathe in, we inhale many gases present in the air, including oxygen. What do you think
happens to the gases that are not needed by the body?
8. You always hear and see the statement, "Government Warning: Cigarette smoking is dangerous to
your health." How does cigarette smoking increase the risk of developing cardiovascular diseases?
9. How does singing from the diaphragm, instead of the throat, help improve the voice quality of a
singer? 10. An old woman joined a kilometer-dash sprint and felt very exhausted afterwards. How did
the old woman's activity affect her heart rate?