Lungs have a large number of alveoli for....

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(B) The lungs contain millions of alveoli,which are tiny,balloon-like structures at the end of the respiratory tree.These alveoli significantly increa

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More surface area for diffusion of gases

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(B) The lungs contain millions of alveoli,which are tiny,balloon-like structures at the end of the respiratory tree.These alveoli significantly increase the total surface area available for the exchange of gases ($O_2$ and $CO_2$) between the air and the blood.According to Fick's law of diffusion,the rate of diffusion is directly proportional to the surface area available.Therefore,a large number of alveoli ensures efficient and rapid gas exchange,which is essential for meeting the metabolic demands of the body.

Gas	Atmospheric Air	Alveoli
$O_{2}$	$159$	$A$
$CO_{2}$	$0.3$	$B$

Similar Questions

Which of the following is true regarding $CO_2$ concentration?

Partial pressure (in $mm \ Hg$) of oxygen and carbon dioxide at different parts involved in diffusion in comparison to those in the atmosphere. Identify $A$ and $B$ and choose the correct option accordingly.
Gas Atmospheric Air Alveoli
$O_{2}$ $159$ $A$
$CO_{2}$ $0.3$ $B$

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Identify the correct option for the diffusion membrane.

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