The most important factor controlling respiration is the $\mathrm { P } _ { \mathrm { O } _ { 2 } }$ of arterial blood.

Name: The most important factor controlling respiration is the $\mathrm { P } _ { \mathrm { O } _ { 2 } }$ of arterial blood.
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The most important factor controlling respiration is the $\mathrm{P}_{\mathrm{CO}_2}$ of arterial blood, as it directly affects the pH of the blood and cerebrospinal fluid, which is closely monitored by the respiratory centers in the brain.

The Most Important Factor Controlling Respiration Is The PO2\mathrm { P } _ { \mathrm { O } _ { 2 } }PO2​​

The Most Important Factor Controlling Respiration Is The $\mathrm { P } _ { \mathrm { O } _ { 2 } }$