PCO_{2} is higher in tissues due to | vedclass

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(B) In the tissues,cellular respiration involves the breakdown of nutrients,a process known as catabolism. During catabolism,oxygen is consumed and ca

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Catabolism

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(B) In the tissues,cellular respiration involves the breakdown of nutrients,a process known as catabolism. During catabolism,oxygen is consumed and carbon dioxide $(CO_{2})$ is produced as a metabolic byproduct. Because $CO_{2}$ is continuously generated in the tissues,its partial pressure $(PCO_{2})$ becomes higher in the tissues compared to the blood. This concentration gradient allows $CO_{2}$ to diffuse from the tissues into the blood,where it is transported to the lungs for exhalation.

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

$PCO_{2}$ is higher in tissues due to

Similar Questions

In the given diagram representing the partial pressure of gases during pulmonary circulation, what are the partial pressures of $CO_2$ at $P$ and $Q$ respectively? (Assuming $P$ is deoxygenated blood entering the lungs and $Q$ is oxygenated blood leaving the lungs)

Diffusion of gases occurs in the alveolar region only and not in the other parts of the respiratory system. Why?

What is the value of $pCO_2$ in atmospheric air,alveoli,and tissues respectively?

What is the percentage of oxygen in expired air (in $\%$)?

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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