First slide

Regulation of Respiration

Question

When you hold your breath, which of the following stimulus would first lead to the urge to breathe?

Easy

A

Falling O₂ concentration in the blood
B

Falling CO₂ concentration in the blood
C

Rising pH of the blood
D

Rising CO₂ concentration in the blood

Solution

A chemosensitive area is situated adjacent to the rhythm centre as well as the chemoreceptors associated with aortic arch and carotid artery are highly sensitive to CO₂ and H⁺. Increase in CO₂ and H⁺ signal the rhythm centre to make necessary adjustments in the respiratory process by which these substances can be eliminated. The role of oxygen in the regulation of respiratory rhythm is quite insignificant.

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App