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

Which of the following functions is performed by gonadotropic hormone?

  1. Secretion of thyroxin

  2. Activation of thyroid

  3. Regulation of activities of adrenal cortex

  4. Regulation of secretions of testes and ovaries

  5. Stimulation of growth hormone
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Gonad stimulating hormones, i.e., gonadotropic hormones regulate the activity of the adrenal cortex.

Multiple choice

Which of the following hormones is not present in males?

  1. Progesterone

  2. Testosterone

  3. Vasopressin

  4. Adrenaline

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

Progesterone is a female hormone produced by the corpus luteum. It prepares the uterus for the reception and development of the fertilised ovum.

Multiple choice

Match the following.

 
1. Insulin (a) Regulates basal metabolism
2. Glucagon (b) Inhibits secretion of insulin and glucagon
3. Somatostatin (c) Stimulates milk ejection
4. Thyroxine (d) Stimulates liver to covert glycogen into glucose
5. Oxytocin (e) Stimulates deposition of extra glucose in liver

  1. 1 - (e), 2 - (d), 3 - (b), 4 - (a), 5 - (c)

  2. 1 - (c), 2 - (e), 3 - (a), 4 - (b), 5 - (d)

  3. 1 - (a), 2 - (c), 3 - (e), 4 - (b), 5 - (d)

  4. 1 - (c), 2 - (d), 3 - (e), 4 - (a), 5 - (b)

  5. 1 - (d), 2 - (e), 3 - (b), 4 - (c), 5 - (a)
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

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Multiple choice

Osteoclasts are inhibited by

  1. parathyroid hormone

  2. calcitonin

  3. 1, 25-dihydroxycholecalciferol

  4. tumour percrosis

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
  1. Calcitonin inhibits bone resorption by direct action on osteoclasts.
    1. Calcitonin exerts its calcium-lowering effects by inhibiting bone resorption. This action is direct.
    2. Calcitonin inhibits the activity the activity of osteoclasts in vitro.
Multiple choice

Which of the following statements are true? (i) Excess of a hormone can lead to serious consequences. (ii) Hormones are biologically active in large quantities. (iii) All hormones are water soluble. (iv) Chemically some hormones are proteins, steroids or amines.

  1. Both (i) and (ii)

  2. Both (ii) and (iii)

  3. Both (i) and (iv)

  4. Both (iii) and (iv)
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Excess or deficiency of a hormone can have serious consequences. Hormones can be proteins, steroids or amines.

Multiple choice

Which of the following statements are TRUE for calcitonin? (i) It is secreted when calcium level is high in blood. (ii) It is secreted when calcium level is low in blood. (iii) It moves calcium from blood to bones. (iv) It moves calcium from bones to blood. (v) It moves calcium from blood to urine.

  1. (i) and (v)

  2. (ii) and (iv)

  3. (i) and (iii)

  4. (iii) and (iv)
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Calcitonin is secreted when calcium level is high in blood, and it moves calcium from blood into bones.

Multiple choice

Which of the following functions is performed by adrenaline hormone?

  1. Helps to cope with stress or emergency

  2. Converts glucose into glycogen

  3. Controls the speed of cellular metabolism

  4. Controls reproductive growth and development

  5. Controls the growth of the body
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Adrenaline is released from adrenal gland, when a person is under stress or is involved in intensive exercise.