Which of the following would you expect to happen to cellular respiration during exercise?
A) Increased cellular respiration occurs during exercise, causing a rise in plasma PCO2, which is detected by central chemoreceptors in the brain and perhaps peripheral chemoreceptors in the carotid sinus and aorta to cause an increase in respiration rate.
B) Decreased cellular respiration occurs during exercise, causing a rise in plasma PCO2, which is detected by central chemoreceptors in the brain and perhaps peripheral chemoreceptors in the carotid sinus and aorta to cause a decrease in respiration rate.
C) Exercise causes a decrease in cellular respiration by shifting peripheral chemoreceptors in the heart to cause retention of oxygen.
D) Increased cellular respiration occurs during exercise, causing a decrease in plasma PCO2, which is detected by central chemoreceptors in the brain and perhaps peripheral chemoreceptors in the carotid sinus and aorta to cause a decrease in respiration rate.

Question

Quizplus · Accepted Answer

During exercise, there is an increased demand for energy, which leads to increased cellular respiration. This causes a rise in plasma PCO2, which is detected by chemoreceptors in the brain and other parts of the body. In response to this, there is an increase in respiration rate to remove excess CO2 and supply oxygen to the cells.

Which of the Following Would You Expect to Happen to Cellular