Respuesta :
In the lungs , the concentration gradient of o2 is much steeper between alveolar air and the blood than it is for co2 . It is important for the faster rate of diffusion .
How concentration gradient system works ?
Concentration gradient system works on the principle that gas present in higher concentration always starts diffusing towards lower concentration region .
During inhalation process , there is greater concentration of o2 in the air in alveoli than there is in the blood in the pulmonary capillaries , which results in the diffusion of o2 from the air inside the alveoli into the blood in the capillaries .
Co2 , on the other hand , is more concentrated in the blood in the pulmonary than it is in the air inside the alveoli , which initiates the process of flow .
Hence, for the diffusion of gases in the lungs , it is important .
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