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Give reasons for the following
Oxygen leaves the blood from tissue capillaries, but carbon dioxide enters the blood in tissue capillaries.

 

 

Answer

 pO2 is higher in the tissue capillaries than in the blood. Since the gases diffuse fro the region having higher partial pressure to the region having low partial pressure. Thus, oxygen leaves the blood from tissue capillaries, but carbon dioxide enters the blood in tissue tissue capillaries.