Urine in the inorganic salt content is higher than the original urine
While urea is not recycled
A large amount of water and inorganic salts are recovered
Because the original urine to be re-absorption
In fact, the concentration has increased
The amount of urine is much less than that of plasma, and the total urea content is not higher than that of plasma, and it is difficult for renal tubules to be reabsorbed
