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

The important component of oral contraceptive pills is

  1. Progesterone

  2. Growth hormone

  3. Thyroxine

  4. Luteinizing hormone
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Progesterone is a steroid hormones secreted by the corpus luteum and placenta. Synthetic progesterone is used in therapy and oral contraceptives

Multiple choice

Which of the following is the category of hormones that use secondary messengers?

  1. Nonsteroid

  2. Steroid

  3. Both (1) and (2)

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Nonsteroid hormones (like peptide or amino acid-derived hormones) are water-soluble and cannot cross the cell membrane, so they bind to surface receptors and trigger secondary messengers like cAMP. Steroid hormones are lipid-soluble and act directly on intracellular receptors.

Multiple choice

Bradykenin acts as a/an

  1. retainer of water

  2. female sex hormone

  3. inflammatory mediator

  4. oxytocin

  5. Both (1) and (2)
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Bradykinin is an inflammatory mediator. 

Multiple choice

Insulin is produced by the

  1. pituitary gland

  2. gall bladder

  3. intestines

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

Insulin is a hormone produced by the beta cells of the islets of Langerhans in the pancreas. It plays a critical role in regulating blood glucose levels.