'Higher the solubility of a gas, higher is its rate of exchange between blood and tissue '.Discuss with example.
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Although the primary sites of gas exchange are the alveoli, exchange of O2 and CO2 also happens between blood and tissues. Gas exchange at these sites happens by simple diffusion based on a concentration/pressure gradient. The rate of diffusion depends not only on the solubility of gases but also on the thickness of the membranes involved in gas exchange.
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