What Is the Primary Regulator of the Magnitude of Alveolar

Multiple Choice

What is the primary regulator of the magnitude of alveolar ventilation under normal circumstances?

A) The H⁺ concentration in the brain extracellular fluid,which is monitored by central chemoreceptors
B) The PO₂ of the arterial blood,which is monitored by central chemoreceptors
C) The PO₂ of the arterial blood,which is monitored by peripheral chemoreceptors
D) The H⁺ concentration in the arterial blood,which is monitored by central chemoreceptors
E) Stretch receptors in the lung