l. Direction: Read the following carefully. Choose the letter of the best answer. Write your answer on the space provided before the number

1. What is the functionai unit of the nervous sysiem? A. Brain. B. Neurons C. Muscles D. Bones

2. Which body organ is protected by the spinal column? A. Brain B. Stomach
C. Kidney D. Spinal cord

3. What conscious part of the brain enables us to think, store memories and do intelligent interpretations. A. Cerebellum B Medulla oblongata C.Cerebrum. D. Spinal cord

4. In which part of the respiratory system does exchange of oxygen and carbon dioxide take place?
A. Nasai cavity B. Pharynx C. Lungs
D.Trachea

5. Which of these distributes nutrients to the different body cells? A. Blood B. Blood vessel C. Heart. D. Small intestine

6. Which muscular organ serves as storage and mixing chamber for food? A Esophagus B. Small intestine. C Pharynx. D. Stomach

7. How can you keep your heart strong? A .Eating heart-shaped candy. B. Doing activities like playing outside, riding your bike, and swimming C. Smoking
D. Sleeping 18 hours a day

8. What controls and coordinates the activities of the whole nervous system? A .Central nervous system. B. Sympathetic nervous system C. Nervous system D. Brain​