What is correct at the alveoli?

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) At the level of the alveoli,the partial pressure of oxygen $(PO_2)$ is high (approximately $104 \ mmHg$) compared to the deoxygenated blood arrivi

Vedclass · Accepted Answer

High $PO_2$

Vedclass · Answer

(A) At the level of the alveoli,the partial pressure of oxygen $(PO_2)$ is high (approximately $104 \ mmHg$) compared to the deoxygenated blood arriving from the tissues $(40 \ mmHg)$.This high $PO_2$ facilitates the diffusion of oxygen from the alveoli into the blood.Conversely,the partial pressure of carbon dioxide $(PCO_2)$ is low in the alveoli $(40 \ mmHg)$ compared to the blood $(45 \ mmHg)$,allowing $CO_2$ to diffuse out of the blood into the alveoli.Factors like high $PCO_2$,high $H^+$ concentration,and higher temperature are characteristic of tissues,which promote the dissociation of oxygen from hemoglobin (the Bohr effect).

Similar Questions

In rabbits,which part of the lungs is responsible for the exchange of gases?

Under normal physiological conditions,$100 \, mL$ of oxygenated blood delivers how much $CO_2$ to the alveoli?

Identify $A, B$ and $C$ in the given diagram and choose the correct option accordingly.

What will be the $pO_{2}$ and $pCO_{2}$ in atmospheric air as compared to alveoli?

Explain: Diffusion of $O_2$ from alveoli to tissues and of $CO_2$ from tissues to alveoli.

Vedclass Test Series

Exam Paper Generator

Online Exam Module