What is the normal arterial blood pH range?

• A. 7.25 to 7.35
• B. 7.35 to 7.45
• C. 7.45 to 7.55
• D. 7.55 to 7.65

Answer: (B)

The normal arterial blood pH range is crucial to understanding the body's acid-base balance. The correct range of 7.35 to 7.45 indicates that the body maintains a slightly alkaline environment essential for various biochemical processes. When the blood pH falls below this range, it signifies acidosis, which can impair cellular function and negatively affect organ systems. Conversely, a pH above this range indicates alkalosis, which can similarly disrupt normal physiological activities.

Maintaining blood pH within this narrow range is necessary for optimal enzyme activity, oxygen transport, and overall metabolic function. Deviations from the normal pH range can lead to serious health issues, reaffirming the importance of understanding and monitoring arterial blood pH values in clinical practice.