1. Which of the different types of nerves or neurons are responsible for carrying the impulse from the sense organs to the spinal cord or brain?

2. Which of the following is the main organ of the nervous system?

3. Blood is the liquid part of the circulatory system. Which is the main work of the blood?

4. The main function of the human heart is to pump blood throughout the body. Which of its part pumps deoxygenated blood to the heart?

5. Nostrils are the opening into the nasal passages that are lined with hairs called cilia. Why are cilia important?

6. Our throat is divided into two separate tubes, the windpipe and food pipe. What prevents food from entering the windpipe?

7. Digestive system breaks down food which serves as a good source of energy needed by our body. Which shows the path of food in the digestive system?

8. Skin helps our body to maintain normal state. How does the skin regulates body temperature?

9. What do you call the outermost layer of the human skin that protects the body?

10. There are 12 pairs of ribs. What is the function of the ribcage?