Review Of Related Diseases (RRD) 1 Practice Exam

Acidosis is best described as

A state of greater-than-usual concentration of acidic substances in the blood and cells. A state of increased alkalinity. A condition of high CO2 only. A deficiency of bicarbonate.

Correct Answer:

A state of greater-than-usual concentration of acidic substances in the blood and cells.

Explanation:

Acidosis is about an increased acidity in the body's fluids—more hydrogen ions in the blood and extracellular tissues, which lowers pH. This emphasizes the presence of acids rather than pointing to a single cause. While high CO2 can drive acidosis because it forms carbonic acid, acidosis isn’t defined as high CO2 alone; metabolic acidosis can occur from bicarbonate loss or excess acid production even with normal CO2. Likewise, bicarbonate deficiency is a contributor to acidosis, but acidosis itself is about overall acidity, not just a lack of bicarbonate. So the best description is a state of greater-than-usual concentration of acidic substances in the blood and cells.

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