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Question : How is oxygen and CO_2 transported in human beings ? |
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Answer» Solution :1. Transport of oxygen . It is transported from respiratory ORGANS to body cells . (i) Haemoglobin helps in the transport of oxygen. In the alveoli of the lungs , the haemoglobin oxygen. In the alveoli of the lungs , the haemoglobin (Hb) PRESENT in red blood corpuscles combines with oxygen to form oxyhaemoglobin . When the blood reaches the tissue , oxygen is released from the oxyhaemoglobin for the consumption by the tissues . `Hb + O_(2) to HbO_2` (ii) Some of `O_2` is transported in the solution form by plasma of blood. 2. Transport of `CO_2` . 1 `CO_(2)` diffuses into blood plasma to form PHYSICAL solution . 2. `CO_2` forms unstable carbonic ACID with WATER and is transported as such . 3 `CO_(2)` is also transported from tissue to lungs as bicarbonates. |
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