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

Which of the following hormones are secreted by adrenal medulla?

  1. Thyroxin and insulin

  2. Adrenaline and glucagon

  3. Epinephrine and norepinephrine

  4. Insulin and glucagon

  5. Calcitonin and thyroxin
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Adrenal medulla secretes adrenalin (also called epinephrine and noradrenalin). It prepares the body to meet any emergency situation.

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

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.