What is the typical pH range for human blood?

The typical pH range for human blood is 7.35 to 7.45, which is essential for maintaining normal physiological functions. This narrow range is crucial because even slight deviations can lead to significant health issues. The body employs various buffers, such as bicarbonate, to regulate blood pH and maintain homeostasis, which is vital for enzymatic reactions, oxygen transport, and metabolic processes. A pH lower than 7.35 indicates acidosis, whereas a pH higher than 7.45 suggests alkalosis, both of which can have serious implications for overall health. Thus, the correct answer reflects the critical balance the body needs to maintain within its pH levels for optimal function.