Biology ยท 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 hormone is primarily responsible for signaling hunger and stimulating appetite?

  1. Ghrelin

  2. Leptin

  3. Insulin

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

Ghrelin is the primary hormone responsible for signaling hunger and stimulating appetite. It is produced by the stomach and intestines and acts on the hypothalamus, a region of the brain involved in regulating hunger and satiety.

Multiple choice

Which hormone is primarily responsible for signaling satiety and fullness after a meal?

  1. Ghrelin

  2. Leptin

  3. Insulin

  4. Glucagon
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Leptin is the primary hormone responsible for signaling satiety and fullness after a meal. It is produced by fat cells and acts on the hypothalamus, a region of the brain involved in regulating hunger and satiety.

Multiple choice

What is the hormone that is responsible for stimulating milk production in the breasts?

  1. Prolactin

  2. Estrogen

  3. Progesterone

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

Prolactin is the hormone that is responsible for stimulating milk production in the breasts.

Multiple choice

Which hormone is responsible for regulating male sexual function?

  1. Testosterone

  2. Estrogen

  3. Progesterone

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

Testosterone is the hormone responsible for regulating male sexual function.

Multiple choice

The hypothalamus produces hormones that regulate:

  1. Growth and development

  2. Reproduction

  3. Metabolism

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The hypothalamus produces hormones that influence growth, reproduction, and metabolism, among other functions.

Multiple choice

Which hormone is released by the hypothalamus to stimulate the release of growth hormone from the pituitary gland?

  1. Thyrotropin-releasing hormone (TRH)

  2. Gonadotropin-releasing hormone (GnRH)

  3. Growth hormone-releasing hormone (GHRH)

  4. Prolactin-releasing hormone (PRH)
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Growth hormone-releasing hormone (GHRH) is produced by the hypothalamus to stimulate the release of growth hormone from the pituitary gland.

Multiple choice

Which hormone is released by the hypothalamus to inhibit the release of prolactin from the pituitary gland?

  1. Dopamine

  2. Thyrotropin-releasing hormone (TRH)

  3. Gonadotropin-releasing hormone (GnRH)

  4. Prolactin-releasing hormone (PRH)
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Dopamine, produced by the hypothalamus, acts as a prolactin-inhibiting hormone, suppressing the release of prolactin from the pituitary gland.

Multiple choice

Which hormone is released by the hypothalamus to stimulate the release of adrenocorticotropic hormone (ACTH) from the pituitary gland?

  1. Corticotropin-releasing hormone (CRH)

  2. Thyrotropin-releasing hormone (TRH)

  3. Gonadotropin-releasing hormone (GnRH)

  4. Prolactin-releasing hormone (PRH)
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Corticotropin-releasing hormone (CRH) is produced by the hypothalamus to stimulate the release of adrenocorticotropic hormone (ACTH) from the pituitary gland.

Multiple choice

Which hormone is released by the hypothalamus to stimulate the release of luteinizing hormone (LH) and follicle-stimulating hormone (FSH) from the pituitary gland?

  1. Gonadotropin-releasing hormone (GnRH)

  2. Thyrotropin-releasing hormone (TRH)

  3. Growth hormone-releasing hormone (GHRH)

  4. Prolactin-releasing hormone (PRH)
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Gonadotropin-releasing hormone (GnRH) is produced by the hypothalamus to stimulate the release of luteinizing hormone (LH) and follicle-stimulating hormone (FSH) from the pituitary gland.

Multiple choice

Which theory of aging focuses on the role of the neuroendocrine system in the aging process?

  1. Mitochondrial Theory

  2. Telomere Theory

  3. Neuroendocrine Theory

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

The Neuroendocrine Theory proposes that aging is influenced by changes in the neuroendocrine system, which regulates hormones and other physiological processes.

Multiple choice

Which hormone is responsible for stimulating protein synthesis?

  1. Insulin

  2. Glucagon

  3. Epinephrine

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

Insulin is a hormone that stimulates protein synthesis, which is the process by which new proteins are made.

Multiple choice

Which hormone is primarily responsible for raising blood sugar levels?

  1. Insulin

  2. Glucagon

  3. Somatostatin

  4. Ghrelin
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Glucagon is a hormone produced by the pancreas that raises blood sugar levels by stimulating the liver to convert stored glycogen into glucose and by inhibiting the uptake of glucose by cells.

Multiple choice

Which hormone is commonly associated with the stress response?

  1. Epinephrine

  2. Dopamine

  3. Serotonin

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

Epinephrine, also known as adrenaline, is a hormone released during the stress response, which prepares the body for a fight-or-flight reaction.

Multiple choice

Which of the following is NOT a hormone produced by the adrenal glands?

  1. Cortisol

  2. Epinephrine

  3. Aldosterone

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

Thyroxine is a hormone produced by the thyroid gland, not the adrenal glands.

Multiple choice

Which hormone is responsible for the 'fight or flight' response?

  1. Cortisol

  2. Epinephrine

  3. Aldosterone

  4. Thyroxine
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Epinephrine is the hormone responsible for the 'fight or flight' response, which prepares the body for physical exertion or stress.