Final answer:
The alveolus is the site of gas exchange in the respiratory system. It is lined with capillaries, which allow for rapid diffusion of gases. The respiratory membrane, formed by the alveolar and capillary membranes, is approximately 0.5 μm thick, allowing for efficient exchange of oxygen and carbon dioxide.
Step-by-step explanation:
The alveolus is the site of gas exchange in the respiratory system. It is lined with capillaries, which allow for rapid diffusion of gases.
The respiratory membrane, formed by the alveolar and capillary membranes, is approximately 0.5 μm thick, allowing for efficient exchange of oxygen and carbon dioxide.Illustrate the alveolus and associated capillary with labeled parts, such as the alveolar and capillary membranes.