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Assertion : Diabetes insipidus it marked...

Assertion : Diabetes insipidus it marked by excessive urination and too much thirst for water .
Reason : Anti-diuretic hormone (ADH) is secreted by the posterior lobe of pituitary gland .

A

If both the assertion and the reason are true and the reason is a correct explanation of the assertion

B

If both the assertion and the reason are true and the reason is not a correct explanation of the assertion

C

If the assertion is true but the reason is false

D

If both the assertion and reason are false

Text Solution

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The correct Answer is:
B
(b)Antidiuretic hormone (ADH) or vasopressin in secreted from posterior pituitary gland.It is released in reponse to a fall in the water content of blood plasma and lead to an increase inth permeability ot water of the distal and collecting tubules of the nephron . Deficiency or hyposecretion of ADH results in diabetes insipidus. Diabetes insipidus is characterised by micturating dilute urine several times a day which result in excessive thirst (polydispisa ) and dehydration.
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