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Rate of respiration is directly proporti...

Rate of respiration is directly proportional to

A

The concentration of oxygen in the blood

B

The concentration of carbon dioxide in the blood

C

Oxygen in trachea

D

Diaphragm expansion

Text Solution

Verified by Experts

The correct Answer is:
B
The amount the carbon dioxide in the blood exerts a strong influence on respiratory rate. As your activity level increases our cells especially muscle cells produce an increased amount of carbon dioxide. The rhythmicity center in the brain stem detects increased carbon dioxide and increases the respiratory rate to eliminate the excess.
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