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

The hormone produced in thyroid is ______.

  1. insulin

  2. oestrogen

  3. progesterone

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

The thyroid gland primarily produces thyroxine (T4) and triiodothyronine (T3), collectively called thyroid hormones. Insulin is produced by the pancreas, while estrogen and progesterone are produced by the ovaries.

Multiple choice

Which of the following hormones is important during emergency?

  1. Aldosterone

  2. Adrenaline

  3. Thyroxine

  4. Calcitonin

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

Adrenaline is released in the body of a person who is feeling strong emotions (such as excitement, fear or anger) and it causes the heart to beat faster. It is also called the stress hormone. It is secreted from adrenal medulla.

Multiple choice

Alloxan destroys which of the following?

  1. STH cells

  2. Beta cells of islets of Langerhans

  3. Cells of Sertoli

  4. Cells of Leydig

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

Alloxan is widely used to induce experimental diabetes in animals as it destroys beta cells of islets of Langerhans.

Multiple choice

The master-gland in the body is

  1. pancreas

  2. liver

  3. pituitary

  4. brain
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The pituitary gland is known as the master gland because it secretes hormones that control the activity of other endocrine glands.

Multiple choice

What is the primary function of Leydig cells of the testes?

  1. Regulating pituitary secretion of prolactin

  2. Inhibin secretion

  3. Nitric oxide release

  4. Testosterone synthesis

  5. Synthesis of androgen binding protein
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The primary function of Leydig cells is to synthesize and secrete testosterone. Leydig cells do this in a dose-dependent manner in response to LH.