Which of the following will happen as a result of the decrease in concentration of carbon dioxide in the blood at the end of the scenario?
A) Jane's rate of breathing will continue to increase.
B) The signal from the chemoreceptors will stop being sent.
C) The medulla will send more frequent impulses to the diaphragm and rib muscles.
D) The signal from the chemoreceptors will be sent more strongly.
E) The diaphragm and rib muscles will contract more forcefully.

Question

Quizplus · Accepted Answer

The chemoreceptors in the brain detect the decrease in carbon dioxide in the blood and send signals to the medulla to decrease the rate of breathing. Therefore, the signal from the chemoreceptors will stop being sent, leading to a decrease in Jane's rate of breathing. The other options suggest an increase in breathing, which is opposite to what is expected when there is a decrease in carbon dioxide in the blood.

Which of the Following Will Happen as a Result of the Decrease