1. When you inhale, which of the following will contract and moves downward?

A. bronchioles B. diaphragm C. lungs D. nose

2. Where are vocal cords found?

A. bronchi B. larynx C. pharynx D. trachea

3. Which of the following activities can cause respiratory disease?

A. smoking C. eating fruits and vegetables

B. taking a bath everyday D. drinking water and fruit juices

4. Which blood cells fight foreign substances like bacteria and viruses that enter the

body?

A. plasma B. platelets C. red blood cells D. white blood cells

5. Which part of the circulatory system pumps blood to all parts of the body?

A. arteries B. capillaries C. heart D. veins

6. What makes the blood red?

A. hemoglobin B. plasma C. platelets D. white cells



7. Which blood vessels carry deoxygenated blood back to the heart?

A. aorta B. arteries C. capillaries D. veins

8. Which of the following do you experience when you are excited?

A. Heart is rested. C. Heart beats slowly.

B. Heart beats faster. D. Heart stops beating.

9. What happens when the blood passes the lungs?

A. The blood becomes red.

B. The blood mixes with carbon dioxide.

C. The blood gives off carbon dioxide and absorbs oxygen.

D. The blood gives off oxygen and carbon dioxide at the same time.

10.In which blood vessels does the exchange of oxygen, food nutrients and waste

materials from the blood take place?

A. in the atrium C. in the veins

B. in the capillaries D. in the heart


C. The brain controls all activities of the body.

D. All of the above ​