Normally, in a healthy adult, the initial filtrate in the kidneys is about ______ litres/day.
A
60
B
120
C
180
D
90
Correct Option:
C
Explanation
A healthy adult's kidneys form roughly 180 litres of glomerular filtrate per day. Most of this water and useful dissolved substances are reabsorbed along the nephron, so only about 1–2 litres of urine are usually excreted daily. This large difference illustrates the enormous reabsorptive capacity of the kidneys.
