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why only oxygen and carbon dioxide suits to our lungs
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why only oxygen and carbon dioxide suits to our lungs
The primary function of the respiratory system is to exchange oxygen and carbon dioxide. Inhaled oxygen enters the lungs and reaches the alveoli. The layers of cells lining the alveoli and the surrounding capillaries are each only one cell thick and are in very close contact with each other. This barrier between air and blood averages about 1 micron (1/10,000 of a centimeter, or 0.000039 inch) in thickness. Oxygen passes quickly through this air-blood barrier into the blood in the capillaries. Similarly, carbon dioxide passes from the blood into the alveoli and is then exhaled.
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why only oxygen and carbon dioxide suits to our lungs
sorry but I can't understand pls make me understand clearly
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why only oxygen and carbon dioxide suits to our lungs
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