Which of the following denotes a lower than normal blood pH?

• A. Acidosis
• B. Alkalosis
• C. Homeostasis
• D. Metabolism

Answer: (A)

A lower than normal blood pH is referred to as acidosis. This condition indicates an increase in hydrogen ion concentration in the blood, leading to a pH level that falls below the normal range of approximately 7.35 to 7.45. Acidosis can result from various physiological disruptions, including respiratory issues, metabolic disorders, or accumulation of acid in the body.

Alkalosis, in contrast, refers to a higher than normal blood pH due to a decrease in hydrogen ion concentration. Homeostasis is a broader term describing the state of steady internal conditions maintained by physiological processes, rather than a specific condition related to pH. Metabolism encompasses all chemical reactions in the body, including those that affect pH, but it does not specifically denote the state of pH levels. Therefore, acidosis accurately matches the condition associated with a lower than normal blood pH.