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Diffusion in Gas Exchange



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2 38 Diffusion and gas Exchange
Gas Exchange
This video describes the respiratory surface. It explains how worms, insects, fish and mammals take in oxygen and release carbon dioxide. It then tours the major organs of the respiratory system; from the pharynx to the trachea, bronchus, bronchiole and alveoli. It also explains how oxygen is carried on the hemoglobin and how carbon dioxide is carried as bicarbonate.



Gas Exchange During Respiration
Watch and learn about gas exchange during respiration!


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