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 responsible for regulating the body's response to stress?

  1. Insulin

  2. Glucagon

  3. Epinephrine

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

Cortisol is a hormone produced by the adrenal glands in response to stress and helps to regulate the body's response to stress.

Multiple choice

Which hormone is responsible for regulating sleep-wake cycles?

  1. Melatonin

  2. Serotonin

  3. Dopamine

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

Melatonin is a hormone produced by the pineal gland that helps regulate sleep-wake cycles.

Multiple choice

Which hormone is responsible for maintaining the pregnancy?

  1. Estrogen

  2. Progesterone

  3. Human chorionic gonadotropin (hCG)

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

Progesterone is the hormone responsible for maintaining the pregnancy by preparing the uterus for implantation, supporting the growth of the placenta, and inhibiting uterine contractions.

Multiple choice

What is the name of the hormone that triggers the onset of labor?

  1. Estrogen

  2. Progesterone

  3. Human chorionic gonadotropin (hCG)

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

Oxytocin is the hormone that triggers the onset of labor by stimulating contractions of the uterus.

Multiple choice

Which hormone is primarily responsible for stimulating hunger?

  1. Insulin

  2. Ghrelin

  3. Leptin

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

Ghrelin is a hormone produced by the stomach and small intestine that signals hunger to the brain.

Multiple choice

Which hormone is primarily responsible for suppressing hunger?

  1. Insulin

  2. Ghrelin

  3. Leptin

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

Leptin is a hormone produced by fat cells that signals satiety to the brain.

Multiple choice

What is the term for the body's natural sleep-wake cycle?

  1. Homeostasis

  2. Metabolism

  3. Circadian Rhythm

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

Circadian Rhythm is the body's natural sleep-wake cycle, which is influenced by light and darkness.

Multiple choice

Which hormone is primarily responsible for suppressing hunger?

  1. Insulin

  2. Ghrelin

  3. Leptin

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

Leptin is a hormone produced by fat cells that signals satiety to the brain.

Multiple choice

Which hormone is primarily responsible for regulating sleep-wake cycles?

  1. Epinephrine

  2. Dopamine

  3. Serotonin

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

Melatonin is a hormone produced by the pineal gland in response to darkness. It plays a crucial role in regulating the body's circadian rhythm and promoting sleepiness.

Multiple choice

Which hormone is involved in regulating growth and development?

  1. Insulin

  2. Glucagon

  3. Growth hormone

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

Growth hormone, also known as somatotropin, is a hormone produced by the pituitary gland. It plays a crucial role in promoting growth and development in children and adolescents.

Multiple choice

Which hormone is involved in regulating the menstrual cycle and fertility?

  1. Estrogen

  2. Progesterone

  3. Testosterone

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

Estrogen is a hormone produced by the ovaries. It plays a crucial role in regulating the menstrual cycle, preparing the uterus for pregnancy, and maintaining reproductive health.

Multiple choice

Which hormone is involved in regulating metabolism and energy expenditure?

  1. Thyroxine

  2. Triiodothyronine

  3. Calcitonin

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

Thyroxine, also known as T4, is a hormone produced by the thyroid gland. It plays a crucial role in regulating metabolism, energy expenditure, and growth and development.

Multiple choice

Which hormone is involved in regulating calcium and phosphate metabolism?

  1. Calcitonin

  2. Parathyroid hormone

  3. Thyroxine

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

Parathyroid hormone, also known as PTH, is a hormone produced by the parathyroid glands. It plays a crucial role in regulating calcium and phosphate levels in the blood.

Multiple choice

Which hormone is involved in regulating fluid balance and blood pressure?

  1. Aldosterone

  2. Antidiuretic hormone

  3. Epinephrine

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

Antidiuretic hormone, also known as vasopressin, is a hormone produced by the hypothalamus and stored in the pituitary gland. It plays a crucial role in regulating fluid balance and blood pressure.

Multiple choice

Which hormone is involved in regulating the body's response to stress?

  1. Epinephrine

  2. Dopamine

  3. Serotonin

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

Epinephrine, also known as adrenaline, is a hormone produced by the adrenal glands. It plays a crucial role in the body's response to stress, preparing the body for a fight-or-flight response.