GENERAL HISTOLOGY

EXCRETORY SYSTEM

EXCRETORY SYSTEM ALL QUESTIONS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A person makes ____ liters of urine a day.
A
3 liters
B
10 liters
C
2 liters
D
1.5 liters
Explanation: 

Detailed explanation-1: -Out of the glomerular filtrate about 188-188.5 litres/day is reabsorbed inside the blood vessels to maintain osmotic balance. The residue in the nephron containing the nitrogenous waste products are removed in the form of the urine. Therefore about 1.5 litres/day is the average urine production in an individual.

Detailed explanation-2: -The normal range for 24-hour urine volume is 800 to 2, 000 milliliters per day (with a normal fluid intake of about 2 liters per day).

Detailed explanation-3: -Median daily water intake was 1.4 L (IQR 0.67–1.94). Median 24-hour urine volume was 2.01 L (IQR 1.20–2.73). A 1 L increase in daily water intake was associated with a 710 mL increase in 24-hour urine output (95% CI 0.55–0.87).

Detailed explanation-4: -Urine volume is considered excessive if it equals more than 2.5 liters per day. A “normal” urine volume depends on your age and gender. However, less than 2 liters per day is usually considered normal. Excreting excessive volumes of urine is a common condition but should not last more than several days.

Detailed explanation-5: -In general, an adult voids up to 2.5 liters of urine daily. If the amount excreted is more than 3 liters, it’s considered abnormal. Depending on the cause, there are other symptoms that can accompany polyuria.

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