It is through this mechanism that blood is oxygenated and carbon dioxide, the waste product of cellular respiration, is removed from the body. At the respiratory membrane, where the alveolar and capillary walls meet, gases move across the membranes, with oxygen entering the bloodstream and carbon dioxide exiting. Pulmonary ventilation provides air to the alveoli for this gas exchange process. The purpose of the respiratory system is to perform gas exchange. Describe the process of internal respiration.Discuss the process of external respiration.
Discuss the importance of sufficient ventilation and perfusion, and how the body adapts when they are insufficient.Describe the mechanisms that drive gas exchange.Compare the composition of atmospheric air and alveolar air.By the end of this section, you will be able to:
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