The most important stimulus that induces changes in ventilation is:
A) partial pressure of oxygen in pulmonary capillaries.
B) partial pressure of oxygen in venous blood.
C) partial pressure of carbon dioxide in arterial blood.
D) partial pressure of oxygen in systemic capillaries.

Question

Quizplus · Accepted Answer

The partial pressure of carbon dioxide in arterial blood is the most important stimulus for changes in ventilation because it directly affects the pH of the blood and cerebrospinal fluid, which is detected by central chemoreceptors.

The Most Important Stimulus That Induces Changes in Ventilation Is