I. Read each item carefully. Choose and encircle the letter of the best answer

1. Which system of the body is responsible in the exchange of gases in the bloodstream?

A. Digestive System
B. Respiratory System
C. Nervous System
D. Circulatory System.

2. What is the major function of the circulatory system?

A. Digestion of food
B. Control unit of the body
C. Distribution of nutrients to the body
D. Responsible for the exchange of gases

3. It is the lightest organ of the body

A. lungs
B. stomach
C.liver
D. kidneys

4. Where does respiration process starts?

A. in the nostrls
B. in the trachea
C. in the pharynx
D. in the bronchi

5. It is the transport system of the body

A. Circulatory System
B. Digestive System
C. Respiratory System
D. Nervous System

6. It pumps blood to all parts of the body

A. brain
B. heart
C. blood vessels
D. None of the above

7. It regulates and coordinates body processes

A. Skeletal System
B. Circulatory System
C. Nervous System
D. Digestive System

8. Which of the following is not a part of the nervous system?

A. brain
B. neurons
C. spinal cord
D. blood vessel

9. It is responsible for the reflex action that protect the body form injury

A. brain
B. neuron
C. spinal cord
D. spinal column

10. Which part of the nervous system controls eating behavior?

A. brain
B. neuron
C. spinal cord
D. spinal column​