Check sibling questions

How is the amount of urine produced regulated? 

Answer

A nephron has tube-like structures called tubules which have capillaries wound around them.

  • In the tubule, all useful substances get reabsorbed whereas harmful substances (urea, unwanted salts, excess water ) remain in the tubule.
  • Hence tubular reabsorption of water in the tubule is used to regulate the amount of urine produced. 

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