The Primary Regulator of the Magnitude of Ventilation in Normal $\mathrm { P } _ { \mathrm { O } _ { 2 } }$

Multiple Choice

The primary regulator of the magnitude of ventilation in normal circumstances is the

A) H+ concentration of the brain extracellular fluid monitored by central chemoreceptors
B) $\mathrm { P } _ { \mathrm { O } _ { 2 } }$ of the arterial blood monitored by central chemoreceptors
C) $\mathrm { P } _ { \mathrm { O } _ { 2 } }$ of the arterial blood monitored by peripheral chemoreceptors
D) $\mathrm { P } _ { \mathrm { CO } _ { 2 } }$ of arterial blood monitored by central chemoreceptors
E) $\mathrm { P } _ { \mathrm { CO } _ { 2 } }$ of arterial blood monitored by peripheral chemoreceptors