What is the average pH range of the human body?

The average pH range of the human body is typically between 7.35 and 7.45, which is slightly more alkaline than neutral pH (which is 7.0). This range is crucial for proper physiological functioning because many biochemical processes depend on this specific pH level. For instance, enzymes that facilitate biochemical reactions within cells have optimal activities at this pH range. Deviations from this narrow range can lead to conditions such as acidosis (if the pH falls below 7.35) or alkalosis (if it rises above 7.45), both of which can disrupt metabolic processes and affect overall body function.

Maintaining this pH range is primarily managed through buffer systems in the blood, which include bicarbonate, proteins, and other substances that can absorb excess hydrogen ions or release them as needed. This homeostatic mechanism is vital for maintaining the environmental conditions that the myriad of cellular activities rely on to function effectively.