When you hold your breath,which of the follow | vedclass

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

Question

(D) The correct answer is $(d)$. When you hold your breath,the concentration of $CO_2$ in the blood increases because it is not being exhaled. This ri

Vedclass · Accepted Answer

Rising $CO_2$ concentration

Vedclass · Answer

(D) The correct answer is $(d)$. When you hold your breath,the concentration of $CO_2$ in the blood increases because it is not being exhaled. This rise in $CO_2$ concentration (hypercapnia) is the primary stimulus that acts on the central chemoreceptors in the medulla oblongata of the brain. These receptors detect the increase in $H^+$ ions resulting from the reaction of $CO_2$ with water,which triggers the respiratory centre to increase the rate and depth of breathing. While a decrease in $O_2$ (hypoxia) can also stimulate breathing via peripheral chemoreceptors,the rise in $CO_2$ is the most sensitive and immediate trigger for the urge to breathe under normal physiological conditions.

When you hold your breath,which of the following gas changes in blood would first lead to the urge to breathe?

Similar Questions

Select the correct statement regarding the respiratory rhythm centers.

Rate of breathing is increased by

What happens to respiration when the concentration of $CO_2$ increases in the blood?

The rate and depth of respiration increase when:

The impulse for voluntary muscles for forced breathing starts in

Vedclass Test Series

Exam Paper Generator

Online Exam Module