Gas exchange in the lungs allows oxygen to diffuse through the small air sacks or alveoli at the end of one's bronchial tubes into the blood, and it allows carbon dioxide to move from the blood into the alveoli to allow ... More »

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Gas exchange occurs in the alveoli of the lungs. In these alveoli, carbon dioxide moves from the red blood cells into the alveoli, and oxygen moves from the alveoli into the red blood cells. More »

In the respiratory tract, gas exchange takes place in the alveoli of both of the lungs. The alveoli are small sacs of air that are covered in a material known as surfactant. This substance allows the alveoli to expand an... More »

The exchange of carbon dioxide and oxygen occurs in the alveoli of the lungs. Oxygen is taken into the body through the process of inhalation while carbon dioxide is eliminated through exhalation. More »

The main function of the alveoli is the exchange of carbon dioxide for oxygen in the lungs. Alveoli are small air sacs of the respiratory system. For this gas exchange to occur, air must travel through different parts of... More »

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During gas exchange, oxygen from the air breathed in diffuses into the bloodstream, and carbon dioxide from the bloodstream diffuses into the air in the alveoli. This gas exchange occurs through the thin wall of the alve... More »

Pulmonary alveoli are the tiny sacs inside the lungs that fill with air with each breath and facilitate the exchange of gas with the blood. According to HowStuffWorks, the oxygen concentration in the alveoli is high, rel... More »