Question

The amount of urine output per day by a normal human being is

• A. 4-5 L
• B. 3-4 L
• C. 1-1.8 L
• D. 0.5-0.75 L

Answer 1

The correct option is (C):

Explanation of the correct option:

1. The glomerular filtrate that is produced in the nephrons is about 180litres/day.
   
2. Out of the glomerular filtrate about 188 - 188.5 litres/day is reabsorbed inside the blood vessels to maintain osmotic balance.
   
3. The residue in the nephron containing the nitrogenous waste products are removed in the form of the urine.
   
4. Therefore about 1.5 litres/day is the average urine production in an individual. ​
5. This comes between the range of 1-1.8 L.
   

Final Answer: The amount of urine output per day by a normal human being is 1-1.8 L.