Assertion: Diabetes insipidus is marked by excessive urination and too much thirst of water.
Reason: Anti-diuretic hormone (ADH) is secreted by the posterior lobe of pituitary gland.
(a) If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
(b) If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
(c) If the Assertion is correct but Reason is incorrect.
(d) If both the Assertion and Reason are incorrect.
(e) If the Assertion is incorrect but the Reason is correct.
(b) If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
Explanation:
Diabetes insipidus (DI) occurs when the kidneys are unable to conserve water as they perform their function of filtering blood. The amount of water conserved is controlled by antidiuretic hormone (ADH) also called vasopressin which is secreted by posterior lobe of pituitary gland. Diabetes inscipidus is characterised by excessive urination and thirst. This problem appears due to the increase in permeability of collecting tubules.