Final answer:
The average adult produces around 1500 mL of urine in a 24-hour period, with normal variations ranging from 1000 to 2000 mL. This quantity is regulated by the kidneys and can indicate various health conditions if significantly higher or lower than the average.
Step-by-step explanation:
The average quantity of urine produced by an adult over a 24-hour period is typically around 1500 milliliters (mL). More specifically, this quantity can range from 1000 to 2000 mL per day under normal conditions. The kidneys play a crucial role in this production, balancing water levels in the body by excreting wastes and excess salts in the form of urine. Factors such as hydration levels, environmental conditions, and individual health may influence the actual quantity produced. However, it is also important to note that producing less than approximately 500 mL/day could indicate dehydration or renal issues, while high volumes of urine production may be symptomatic of conditions like diabetes mellitus or diabetes insipidus.