ANSWER

3. Identify how the structure and function of the villi (in the digestive system) and the alveoli (in the respiratory system) are similar and different. (2) 4. Trillions of bacteria live in the large intestine. Imagine your friend says, \"Bacteria are gross and harmfulwe shouldn't have any in our bodies!\" Identify two important roles that beneficial bacteria play in the digestive system to explain why this statement is not entirely accurate. (2) Part C: Communication (10 marks) 1. Explain the negative feedback loop that is used to control the breathing rate. (3) 2. A weight-loss consultant claims weight problems can easily be solved by surgically removing sections of the digestive system. You wish to explain how this could be dangerous. Choose 4 components of the digestive system and explain how removing this part would negatively affect the process of digestion. (4) 3. Describe what happens to the ribs and diaphragm during inhalation vs exhalation. (3) Part D: Application (10 marks) 1. Explain the role of carbohydrates, lipids, and proteins in the human body. For each nutrient, provide one example of a food that is a good source of that nutrient. (4) 2. To take your pulse, you press your fingers against an artery near the surface of the body. What are you feeling and measuring when you take your pulse? Why can't you take your pulse by pressing your fingers against a vein? (3) 3. A patient has suffered damage to their alveoli due to long-term smoking. Predict how this damage would affect their ability to perform physical activity. Justify your answer based on the function of the alveoli. (3)