When the right kidney is obstructed, the nephrons in the left kidney increase in size to compensate. This statement is true.
When the right kidney is obstructed because of any reason, the nephrons of the left kidney increase in size to compensate.
Nephrons are basically the basic building blocks of the kidney. Nephron's help in filtering the fluid of the body.
Normally when both the Kidneys work efficiently then both the Kidneys have normal size.
But a one of the kidney is obstructed then the nephron size of the Other kidney increases in order to compensate the loss for the lack of use of nephrons of the obstructed kidney.
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