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 statements are true regarding androgens?

  1. They stimulate the male pattern of development.
  2. They stimulate the male and female patterns of development.
  3. They contribute to sex drive in male and females.
  4. They contribute to male secondary sex characteristics.
  5. They stimulate protein synthesis.

  1. 1, 2 and 3

  2. 1, 3, 4 and 5

  3. 1, 2, 4 and 5

  4. 1, 2, 3 and 4
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Androgens are male sex hormones that stimulate male pattern development and secondary sexual characteristics. They contribute to sex drive in both males and females and have anabolic effects including protein synthesis stimulation. Statement 2 is incorrect because androgens primarily stimulate male (not both male and female) patterns of development.

Multiple choice

Which of the following amino acids acts as precursor to hormones epinephrine, norepinephrine and dopamine?

  1. Tyrosine

  2. Threonine

  3. Tryptophan

  4. Proline

  5. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In dopaminergic cells in the brain, tyrosine is converted to L-DOPA by the enzyme tyrosine hydroxylase (TH). TH is the rate-limiting enzyme involved in the synthesis of the neurotransmitter dopamine. Dopamine can then be converted into norepinephrine and epinephrine.

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 sets of hormones is secreted by Islets of Langerhans?

  1. Epinephrine, Cortisone and Insulin

  2. Insulin, Somatostatin and Glucagon

  3. Mineralocorticoids, Glucocorticoids and Adrenal

  4. Glucagen, Glycogen and Insulin

  5. Adrenal, Insulin and Thyroxin

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Islets of Langerhans are groups of hormone secreting cells scattered in the entire pancreas. It possesses three hormones; insulin, glucagon and somatostatin from three different kinds of cells called beta, alpha and delta cells, respectively.