What minimum daily urine volume must the kidneys produce to clear the body of wastes?
AAbout 100 mL per day
BAbout 500 mL per day
CAbout 1500 mL per day
DAbout 2500 mL per day
Answer & Solution
Correct answer: B. About 500 mL per day
1. Wastes must be carried out dissolved in a certain minimum volume of water.
2. That obligatory minimum is about 500 mL per day.
3. Output below this level is termed oliguria and points to severe dehydration or renal disease.
4. Figures of 1500 or 2500 mL sit inside or above the normal daily range rather than at the floor.
_Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 25 "The Urinary System", section 25.1 Physical Characteristics of Urine_
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