MEDICAL
LUNGS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Wet
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Thin
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Dry
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Large
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Detailed explanation-1: -It’s not feasible if it’s dry. If the surface dries out, the exchange of gas will take place at a very low pace as quickly moving gaseous oxygen molecules do not cross the alveoli membrane effectively. The decreased exchange of gas is most probably not sufficient for essential functions to promote blood oxygenation.
Detailed explanation-2: -A respiratory surface is covered with thin, moist epithelial cells that allow oxygen and carbon dioxide to exchange. Those gases can only cross cell membranes when they are dissolved in water or an aqueous solution, thus respiratory surfaces must be moist.
Detailed explanation-3: -If the air we breathe in is too dry, it can damage the tiny air sacs in our lungs. Therefore, the air must be made moist. This is done by absorbing water from the airways. The moisture in the airways comes from food and drink.