Page 22 - Viva ICSE Science 5 : E-book

5. Veins carry blood back to the heart into the ____________.

(a) right auricle (b) left auricle

(c) right ventricle (d) left ventricle

E. Answer the following questions.

1. Explain how circulatory system works along with digestive system.

2. Name the main parts of circulatory system.

3. Draw a diagram to explain the structure of heart.

4. What is blood? Give its composition.

5. What are the functions of blood?

6. What are blood vessels?

7. Explain the structures of arteries and veins.

8. Explain the process of circulation of blood.

THINK AND ANSWER

1. We know that blood vessels are of three types. One of the types has valves in it. Name
the type. What would happen if there were no valves?
2. What do you think would happen if there were no platelets in the blood?

TALK ABOUT

Discuss in class how to take care of the circulatory system. Learn about the exercises and the food
that is important to keep the heart healthy.

LINK AND LEARN

Using the Internet, find out about the eff ects of air pollution on the circulatory system. Write an
essay on the same and show it to your teacher.

8