Biology · General Awareness

Human Endocrine System

1,530 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

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.

Multiple choice

Which hormone has an inhibitory effect on erythropoiesis?

  1. Androgen

  2. Estrogen

  3. Erythropoietin

  4. Thyroxine

  5. Cortisol
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Estrogens have inhibitory effect on erythropoiesis through suppression of erythropoietin production. Estrogen is the main sex hormone in women, and is essential to the menstrual cycle.

Multiple choice zoology respiratory system human respiratory system

Which of the following can be considered as odd one?

  1. Larynx

  2. Glucagon

  3. Testosterone

  4. Prolactin
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Larynx is the sound box while the rest three glucagon, testosterone and prolactin are hormones.
So, the correct answer is 'Larynx'.
Multiple choice

Which essential hormone does the pancreas produce?

  1. adrenaline

  2. insulin

  3. estrogen

  4. testosterone
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The pancreas is a vital organ that regulates blood sugar levels by producing insulin and glucagon. Adrenaline is produced by the adrenal glands, while estrogen and testosterone are sex hormones.

Multiple choice

Which of the following can cause excessive hair growth?

  1. cortisone

  2. steroids

  3. hormones

  4. all of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Excessive hair growth can be triggered by various factors, including hormonal imbalances, the use of certain medications like steroids, and medical treatments involving cortisone.

Multiple choice

What causes the differences in male and female sexual hair patterns?

  1. concentration of circulating estrogens

  2. concentrations of circulating androgens

  3. concentration of circulating insulin

  4. concentration of circulating glucose
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Androgens are the primary hormones responsible for the development of terminal hair in both males and females, influencing the distribution and pattern of sexual hair.