Question

What happens to excess water which enters the nephron??

Answer 1

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The molecules which are not selectively reabsorbed (the urea, excess water and ions) continue along the nephron tubule to the collecting ducts as urine. This eventually passes down to the bladder. Blood or cells in urine can indicate disease in the kidney.

Answer 2

Answer:

The nephron controls water by movement of sodium chloride in and out of the filtrate and the water will follow sodium depending on the osmotic gradient. Water will move from where there is a lesser concentration of sodium chloride to where there is a higher concentration of sodium chloride.What's left in the nephron is a mixture of excess water and ions, as well as the toxin urea. These pass out of the nephron and through the ureters into the bladder, as urine.