Question

ADH or vasopressin is

• A. hormone secreted by the pituitary that promotes reabsorption of water from the glomerular filtrate
• B. enzyme that hydrolyses peptides
• C. energy-rich compound connected with muscle contraction
• D. hormone that promotes glycogenolysis

Answer 1

The correct option is A

hormone secreted by the pituitary that promotes reabsorption of water from the glomerular filtrate

The correct option is A.

Explanation of correct option:

1. ADH is a hormone that is secreted by the posterior lobe of the pituitary gland.
2. It controls the reabsorption of water by kidney tubules or nephrons.
3. ADH plays a vital role in maintaining water balance in the body.
4. When the body is dehydrated, ADH secretion is facilitated. ADH signals nephrons to reabsorb more water from the glomerular filtrate. This leads to the formation of concentrated urine.

Explanation of incorrect option:

Option B:

1. Enzyme that hydrolyses peptides is known as the proteolytic enzyme. Example: pepsin.

Option C:

1. Adenosine triphosphate (ATP) is an energy-rich compound that is connected with muscle contraction.

Option D:

1. Glucagon is a hormone that promotes glycogenolysis. It is secreted by α-cells present in the Islet of Langerhans of the pancreas.

Final answer:

ADH or vasopressin is a hormone secreted by the pituitary that promotes the reabsorption of water from the glomerular filtrate.