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

Insulin is a hormone regulating glucose in blood. Which of the following compounds acts as insulin mimic?

  1. Ammonium metavanadate

  2. Ammonium nitrate

  3. Ammonium nonanoate

  4. Ammonium oxalate
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Ammonium metavanadate, NH4VO3, is a yellow crystalline solid which is water soluble inorganic acid that acts as insulin mimic. It functions as a catalyst to certain reactions and is known to have toxic effects in certain species. It has been found in slag and fly ash produced from coal burning.

Multiple choice

In addition to providing energy and nutrition, certain foods trigger the production of sleep hormones in the human body, just as circadian rhythms do, and these have a relaxing effect like a tranquilizer.

  1. certain foods trigger the production of sleep hormones in the human body, just as circadian rhythms do, and these have a relaxing effect like a tranquilizer

  2. certain foods trigger the production of sleep hormones in the human body, like circadian rhythms do, and these have a relaxing effect like a tranquilizer

  3. certain foods and circadian rhythms both trigger the production of sleep hormones in the human body, and they have a relaxing effect like a tranquilizer

  4. the production of sleep hormones in the human body is triggered both by certain foods and by circadian rhythms, and they have a relaxing effect like a tranquilizer

  5. the production of sleep hormones in the human body is triggered by certain foods, just as with circadian rhythms, and these have a relaxing effect like that of a tranquilizer
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Correct. The sentence contains no error.

Multiple choice

Which of the following cells are concerned with the release of renin?

  1. Macula densa cells

  2. Polkissen cells

  3. Principal cells

  4. Intercalated cells

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

Polkissen cells are the part of juxta glomerular apparatus that measures the blood flow to the nephron and releases renin in response to decreased blood flow to the nephron.

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

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 the following hormones does not act via. a second messenger system?

  1. Glucagon

  2. Epinephrine

  3. Growth hormone

  4. Testosterone
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

It is a steroid hormone from the androgen group that is primarily secreted in the testes. It is the principal male sex hormone and is largely responsible for male growth and development. It does not act via. a second messenger system.