Question

question 33
which of the following statements regarding respiratory rate is not true?
when carbon dioxide levels rise, we breathe more rapidly to expel the excess.
respiratory rate is regulated by the level of carbon dioxide in the blood.
medical conditions like pneumonia or brain injury will affect respiratory rate.
when carbon dioxide levels fall, we breathe more rapidly to bring in more.

Explanation:

The respiratory rate is regulated by the level of carbon - dioxide in the blood. When carbon - dioxide levels rise, we breathe more rapidly to expel the excess. Medical conditions like pneumonia or brain injury can affect the respiratory rate. However, when carbon - dioxide levels fall, we breathe more slowly, not more rapidly to bring in more.

Answer:

When carbon dioxide levels fall, we breathe more rapidly to bring in more.