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How does the exchange of oxygen and carbon dioxide occur in the lungs and tissues ?

Sagot :

Answer:

Gas exchange happens in the alveoli in the lungs and the capillaries that envelop them. When you  inhale oxygen, this one  moves from the alveoli to the blood in the capillaries, and carbon dioxide moves from the blood in the capillaries to the air in the alveoli. In simple words the exchange comes from the inhalation and exhalation of gases