Assertion (A): The person with diabetes insipidus feels thirsty. Reason (R): A person with diabetes insipidus suffers from excess secretion of vasopressin.
- ABoth (A) and (R) are individually true and R is the correct explanation of A
- BBoth (A) and (R) are individually true and R is not the correct explanation of A
- CA is true but R is falseCorrect
- DA is false but R is true
Explanation
The correct option is C because Assertion A is true while Reason R is false.
Diabetes insipidus is a condition characterized by the body's inability to retain water, leading to the excretion of large amounts of dilute urine. This dehydration causes the person to feel intensely thirsty as the body tries to replenish lost fluids.
However, the Reason is incorrect because diabetes insipidus is caused by a deficiency or lack of vasopressin also known as anti-diuretic hormone or ADH, not an excess. Vasopressin is responsible for helping the kidneys reabsorb water back into the bloodstream. When there is too little vasopressin, the kidneys cannot concentrate urine, resulting in excessive water loss.
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