Question

This question consists of two statements, Assertion and Reason. While answering this question you are required to choose any one of the following five responses.

Assertion: Failure of secretion of hormone vasopressin causes diabetes mellitus in the patient.

Reason: Vasopressin increases the volume of urine by increasing the reabsorption of water from the urine.

• A. If both assertion and reason are false.
• B. If the assertion is false but the reason is true.
• C. If both assertion and reason are true but reason is not the correct explanation of the assertion.
• D. If the assertion is true but reason is false.
• E. If both assertion and reason are true and the reason is the correct explanation of the assertion.

Answer 1

The correct option is A If both assertion and reason are false.

Assertion-Reason relation

Failure of secretion of vasopressin/ ADH causes diuresis (loss of water through urine). Diabetes mellitus is a condition of imbalance of the blood sugar level. It is not a consequence of vasopressin deficiency.

The condition of diabetes insipidus arises when there is a deficiency of vasopressin.

Hence, the assertion statement is incorrect.

In order to balance the fluid concentration in the body, the antidiuretic hormone (ADH) hormone is secreted from the posterior pituitary. ADH is otherwise known as vasopressin.

The main function of Antidiuretic hormone (ADH) is to induce more and more reabsorption of water by kidneys preventing diuresis (excess loss of water through urine). Hence, the volume of urine is decreased due to increased secretion of vasopressin.

So, the reason statement is incorrect.