Question

A person passes excessive urine and drinks much water but his glucose level is normal. It is due to

• A. Increased secretion of glucagon
• B. Fall in glucose released in urine
• C. Reduction in insulin secretion
• D. Reduction in vasopressin secretion in posterior pituitary

Answer 1

The correct option is D Reduction in vasopressin secretion in posterior pituitary

If the person passes excessive urine and drinks much water even when his glucose level is normal, this means that there is less water reabsorption in his kidneys. Water reabsorption in kidneys is stimulated by the hormone ADH, also known as vasopressin. It is secreted from the posterior lobe of pituitary gland. It stimulates water reabsorption in kidneys which results in decreased rate of urine production.

So, the correct answer is 'Reduction in vasopressin secretion in posterior pituitary'.