7. Where does gas exchange occur? 18. What are the 2 zones of the respiratory system? a. b. 19. What are the muscles that support the lungs expanding? What do they do? a. b. 20. What is the Bohr Effect? 21. What effect do you think altitude and temperature has on the respiratory system? a. b. 22. What are the benefits of exercise on the respiratory system? 23.What is gas diffusion and where does it occur? 24. Draw a diagram on the flow of air from the mouth into

7. Gas exchange occurs in the alveoli of the lungs.<br /><br />18. The two zones of the respiratory system are:<br />a. Conducting zone<br />b. Respiratory zone<br /><br />19. The muscles that support the lungs expanding are:<br />a. External intercostal muscles<br />b. Diaphragm<br /><br />20. The Bohr Effect refers to the phenomenon where the oxygen-carrying capacity of hemoglobin increases as the concentration of carbon dioxide increases.<br /><br />21. The effects of altitude and temperature on the respiratory system are:<br />a. At higher altitudes, the air pressure is lower, which can lead to decreased oxygen levels and increased respiratory rate.<br />b. In colder temperatures, the airways may constrict, making breathing more difficult.<br /><br />22. The benefits of exercise on the respiratory system include:<br />a. Increased lung capacity and efficiency<br />b. Improved oxygen and carbon dioxide exchange<br /><br />23. Gas diffusion is the process by which gases move from an area of higher concentration to an area of lower concentration. It occurs in the alveoli of the lungs.<br /><br />24. Diagram of the flow of air from the mouth into the lungs:<br />[Insert diagram here]