5. A man accidentally slipped and banged his head on the ground and was confined at the hospital. He cannot move his body anymore. Which part of the brain is affected? A cerebellum B. medulla oblongata C. cerebrum D.pons 6. What type of stimuli does your skin respond to? A. light B. sound waves C. temperature D. the smell of food 7. How does the skin protect you from bacteria and viruses? A. regenerate new skin cells B. secreting oil from the sebaceous glands C. by shedding off dead skin cells D. all of the above 8. How do you call the large bean - shaped muscular organ in the digestives system? A. esophagus B. lungs C. pancreas D. stomach 9. What is the largest internal organ in our body? A. intestines B. liver C. lungs D. stomach 10. Which form of carbohydrates cannot be digested by humans? A. cellulose B. lactose C. starch D. sugar