Same chapter3 marksDifficulty: Medium
Name the substances present in normal urine and two that are absent from it in a healthy person.
Excretory System
3 marksDifficulty: Medium
Why is the kidney called an osmoregulatory organ as well as an excretory organ?
Original Khojo Papers practice question — not from a past board paper.
Answer
Besides removing nitrogenous waste, the kidney regulates the volume and the concentration of the body fluids by adjusting how much water and how much salt it reabsorbs. When the body has excess water it produces a large volume of dilute urine, and when water is short it produces a small volume of concentrated urine.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
Antidiuretic hormone controls this adjustment at the collecting duct.
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