What value is most representative of the pH of arterial blood?

The pH of arterial blood is typically around 7.4, which is considered to be the normal physiological range. This value is crucial for maintaining various biochemical processes within the body. The human body tightly regulates blood pH through various mechanisms, including respiration and metabolic processes, to ensure that it remains within this narrow window—generally between 7.35 and 7.45.

When blood pH deviates significantly from this range, it can lead to acidosis or alkalosis, both of which can have serious effects on bodily functions. A pH value of 7.4 is optimal for enzyme activity, oxygen transport by hemoglobin, and overall metabolic function. Therefore, the value of 7.4 is ideal and representative of healthy arterial blood pH, confirming the choice as the accurate answer.