PATHOLOGY MCQ
URINARY SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The kidneys produce about ____ liters of fluid per day but most is reabsorbed.
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150
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180
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200
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125
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Explanation:
Detailed explanation-1: -In healthy adults, about 47 gallons (180 liters) of fluid is filtered into the kidney tubules each day. Nearly all this fluid (and the electrolytes contained in it) is reabsorbed by the kidney. Only about 1.5 to 2% of the fluid is excreted as urine.
Detailed explanation-2: -Glomerular filtrate equals about 180 liters per day of which about 99% of the filtrate is reabsorbed and returned to the circulation.
Detailed explanation-3: -Out of the total 180 liters of fluid that the kidneys process, 99 percent are reabsorbed in the tubules of the nephron (smallest functioning unit of the kidneys). Therefore, only one percent of 180 liters (1.8 liters) is excreted out of the body as urine.
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