Biology · General Awareness

Human Endocrine System

1,395 Questions

The human endocrine system comprises glands that secrete hormones to regulate bodily functions like metabolism, growth, and reproduction. Competitive exams frequently test the specific roles of hormones such as adrenaline, insulin, and progesterone. Use these questions to master the locations and functions of different hormones.

Hormone functionsIslets of LangerhansFight or flight responseBlood pressure regulationFemale sex hormonesWater soluble hormones

Human Endocrine System Questions

Multiple choice

Prohormones are

  1. active forms of hormones

  2. inactive forms of hormones

  3. both (1) and (2)

  4. none of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

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Multiple choice

A substance called ADH is

  1. a hormone that promotes glycogenesis in liver cells

  2. an enzyme secreted by cells of intestinal wall and hydrolyses dipeptides into amino acids

  3. a pituitary secretion which promotes reabsorption of water from glomerular filtrate

  4. a high energy compound involved in muscle contraction
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

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Multiple choice

Which of the following hormones increase HMG-Co A reductase activity?

  1. Glucagon and glucocorticoids

  2. Insulin and thyroid hormone

  3. Insulin and glucocorticoids

  4. Glucagon and thyroid hormone

  5. Insulin and glucagon
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Insulin and thyroid hormone increase HMG-Co A reductase activity near the beginning of cholesterol synthesis pathway.

Multiple choice

Which of the following is NOT a hormone?

  1. Calcitonin

  2. Melatonin

  3. Myosin

  4. Vasopressin

  5. Thyroxine
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Myosin is a principal contractile proteins found in muscle,  which forms thick filaments in myofibrils of muscle fibers.

Multiple choice

Which of the following statements is incorrect regarding the regulation of calcium and phosphate?

  1. Parathyroid hormone stimulates osteoblasts.

  2. Vitamin D increases calcium absorption from the gut.

  3. Parathyroid hormone promotes phosphate excretion.

  4. Parathyroid hormone is released when there is fall in ionised calcium in the blood.

  5. Parathyroid hormone decelerates vitamin D production in the kidney.
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Parathyroid hormone promotes vitamin D production in the kidney.

Multiple choice

Which of these is the hunger hormone that can act in the brain to stimulate hunger and increase food take?

  1. Cholecystokinin

  2. Gastric inhibitory peptide

  3. Ghrelin

  4. Secretin

  5. Gastrin
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Ghrelin is a hormone released by the lining of the stomach that promotes feeding behavior. The hunger hormone ghrelin, which acts on the brain to stimulate hunger and increase food intake heightens the appeal of high calorie foods over low calorie foods. The hunger hormone ghrelin is activated by fats from the foods we eat.