Question

ADH is a/an

• A. High energy compound formed by glycogenesis in liver cells
• B. Pituitary secretion which promotes reabsorption of water from glomerular filtrate
• C. Hormone that promotes glycogenesis in liver cells
• D. Enzyme secreted by cells of intestinal wall which hydrolyses dipeptides into amino acids

Answer 1

Answer: (B)

Pituitary secretion which promotes reabsorption of water from glomerular filtrate

ADH (Antidiuretic hormone) is also known as Vasopressin. It is a peptide hormone secreted from posterior lobe of pituitary gland. A diuretic substance increases urine formation. Antidiuretic hormone decreases rate of urine formation by stimulating water reabsorption in the kidneys. It acts on collecting ducts to reabsorb water from the glomerular filtrate. Deficiency of ADH causes diabetes insipidus which is characterized by excessive urination and thirst.

So, the correct answer is 'Pituitary secretion which promotes reabsorption of water from glomerular filtrate'.