Question

Hypoglycemic hormone is

• A. Insulin
• B. Glucagon
• C. Thyroxine
• D. ACTH

Answer 1

The correct option is A Insulin

A. Insulin is secreted from the β cells of islets of Langerhans of pancreas. Insulin acts on hepatocytes and adipocytes and increases the uptake of cellular glucose and its utilisation. This leads to movement of glucose to hepatocytes and adipocytes from the blood, thereby resulting in the decreased blood glucose levels.

B. Glucagon is secreted from alpha cells of islets of Langerhans of pancreas. It increases blood sugar level by stimulating glycogenolysis (i.e. break down of glucose) and gluconeogenesis (synthesis of glucose).

C. Thyroxine is secreted from thyroid gland. It stimulates the consumption of oxygen by metabolically active tissues and also increases the oxidation of glucose in tissues.

D. ACTH (Adrenocorticotropic hormone) is secreted from anterior lobe of pituitary gland. It increases the flow of blood to adrenal cortex and also increases the concentration of cholesterol and steroids. This result in increased output of steroid hormone cortisol from adrenal cortex.

Hence, out of all given hormones, insulin is hypoglycemic because it lowers the level of sugar in blood.

So, the correct answer is 'Insulin'.