The blood leaving the lungs has all its haemo | vedclass

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

Question

(B) The exchange of gases occurs due to the partial pressure gradient of $O_2$ and $CO_2$. In the lungs,the partial pressure of oxygen $(pO_2)$ is hig

Vedclass · Accepted Answer

$O_2$ concentration is lower in tissues than in the lungs.

Vedclass · Answer

(B) The exchange of gases occurs due to the partial pressure gradient of $O_2$ and $CO_2$. In the lungs,the partial pressure of oxygen $(pO_2)$ is high,which promotes the binding of $O_2$ with haemoglobin to form oxyhaemoglobin. As blood reaches the tissues,the $pO_2$ is significantly lower compared to the blood because the tissues continuously consume $O_2$ for cellular respiration. Due to this lower $pO_2$ in the tissues,the affinity of haemoglobin for $O_2$ decreases,causing the oxyhaemoglobin to dissociate and release $O_2$ into the tissues.

The blood leaving the lungs has all its haemoglobin oxygenated. Why does it give up oxygen to the tissues?

Similar Questions

What is the partial pressure of oxygen $(pO_2)$ in the alveoli of the lungs compared to the blood?

Maximum amount of oxygen is exchanged from the blood in the . . . . . . .

Solubility of $CO_2$ is . . . . . . times higher than that of $O_2$.

Why are a very large number of alveoli present in the lungs?

In humans,where does the exchange of gases take place?

Vedclass Test Series

Exam Paper Generator

Online Exam Module