Question

While the kidneys process about 180 L of blood-derived fluids daily, the amount that actually leaves the body is ________.

A) 50%, or 90 L
B) all of the 180 L
C) 1%, or 1.8 L
D) 100 L

Answer 1

While the kidneys process about 180 L of blood-derived fluids daily, the amount that actually leaves the body is 1%, or 1.8 L (Option C). The kidneys reabsorb 99% of the filtrate.

Step-by-step explanation:

About 180 liters of blood-derived fluids is been processed daily by the kidneys, but the amount that actually leaves the body is 1%, or 1.8 L.

This is because the glomerular filtration rate (GFR) indicates that around 99% of the filtrate is reabsorbed back into circulation, leaving only the remaining 1-2 liters to be expelled as urine.

The kidneys are highly efficient in filtering blood and reabsorbing necessary substances, while excess water, salts, and waste products are removed from the body through urine.

Hence, the correct answer is: 1%, or 1.8 L (Option C).