Physiology Respiratory System fb6110b9

Transport of carbon monoxide (CO) is diffusion limited because-

High affinity of CO for hemoglobin

Alveolar membrane is less permeable CO

CO crosses epithelial barrier slowly

ON exposure to air there is sudden increase in partial pressure

High-Yield Explanation

Ans. (a) High affinity of CO for hemoglobin(Ref: Ganong, 25th ed/p.640)The affinity of carbon monoxide for hemoglobin is about 210 times more than that of oxygen for hemoglobin

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