|
● Extracellular pH = bicarbonates ÷ carbon dioxide, OR pH = [HCO3‾] ÷ PCO2. The Henderson-Hasselbalch
(H-H) equation, known to virtually everyone who has studied basic
physiology, tells us that pH in blood, cerebrospinal, lymph and interstitial
fluids (around cells) is regulated by the relationship between the presence
of carbon dioxide, PCO2,
regulated by breathing, and bicarbonate
concentration, [HCO3‾],
regulated by the kidneys. |