Question

Select the correct matching of a hormone, its source and function.

• A. Norepinephrine – Adrenal medulla – Increases heartbeat, rate of respiration and alertness
• B. Vasopressin – Posterior pituitary – Increases loss of water through urine
• C. Prolactin – Posterior pituitary – Regulates growth of mammary glands and milk formation in females
• D. Glucagon – Beta­ cells of Islets of Langerhans – Stimulates glycogenolysis

Answer 1

The correct option is A

Norepinephrine – Adrenal medulla – Increases heartbeat, rate of respiration and alertness

The correct option is A.

Explanations of the correct option:

Option A:

1. Norepinephrine is known as the hormone of flight and fight.
2. It is a neurotransmitter that helps in increasing blood pressure, and heart rate for a brief period.
3. It is produced by the adrenal medulla near the kidney.
4. Norepinephrine is also known as adrenaline.

Explanations of the incorrect options:

Option B:

1. Vasopressin is a hormone that helps in the retention of water.
2. It is produced by the posterior pituitary of the hypothalamus.
3. It increases water retention in the body and helps and hence, does not increase the loss of water through urine.
4. Therefore this is the incorrect option.

Option C:

1. Prolactin is a hormone that helps in the secretion of milk after childbirth.
2. It is an incorrect option as it is produced by the anterior pituitary.

Option D:

1. Glucagon is secreted by the alpha cells of the pancreas.
2. It helps in the regulation of glucose and prevents blood glucose levels to drop in blood.
3. It is an incorrect option.

Final answer: The correct matching of the hormone, its source, and function is Norepinephrine produced by the Adrenal medulla and functions to increase heartbeat, rate of respiration, and alertness.