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 stimulates the release of adrenaline and noradrenaline in response to stress?

  1. Cortisol

  2. Epinephrine

  3. Thyroxine

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

Cortisol is a hormone produced by the adrenal glands that helps the body respond to stress by increasing energy levels and suppressing non-essential functions.

Multiple choice

Which hormone is involved in regulating calcium and phosphate levels in the body?

  1. Parathyroid hormone

  2. Calcitonin

  3. Estrogen

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

Parathyroid hormone, produced by the parathyroid glands, helps regulate calcium and phosphate levels in the blood, maintaining bone health and proper nerve and muscle function.

Multiple choice

Which hormone is responsible for regulating the menstrual cycle and ovulation?

  1. Estrogen

  2. Progesterone

  3. Testosterone

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

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

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 and promotes relaxation.

Multiple choice

Which hormone is involved in regulating metabolism and energy expenditure?

  1. Thyroxine

  2. Triiodothyronine

  3. Epinephrine

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

Thyroxine, produced by the thyroid gland, plays a crucial role in regulating metabolism, energy expenditure, and growth.

Multiple choice

Which hormone is involved in regulating the immune response and inflammation?

  1. Cortisol

  2. Epinephrine

  3. Prolactin

  4. Interleukin-1
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Interleukin-1 is a cytokine that plays a crucial role in regulating the immune response and inflammation.

Multiple choice

Which hormone is responsible for regulating calcium and phosphate levels in the blood?

  1. Parathyroid hormone

  2. Calcitonin

  3. Estrogen

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

Parathyroid hormone, produced by the parathyroid glands, helps regulate calcium and phosphate levels in the blood, maintaining bone health and proper nerve and muscle function.

Multiple choice

Which hormone is responsible for regulating blood sugar levels?

  1. Insulin

  2. Glucagon

  3. Epinephrine

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

Insulin is the primary hormone responsible for regulating blood sugar levels by promoting the uptake of glucose into cells.

Multiple choice

Which hormone is responsible for regulating blood sugar levels?

  1. Insulin

  2. Glucagon

  3. Epinephrine

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

Insulin is a hormone produced by the pancreas that helps regulate blood sugar levels by facilitating the uptake of glucose into cells.

Multiple choice

At high altitudes, the body produces more of which hormone?

  1. Epinephrine

  2. Insulin

  3. Erythropoietin

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

At high altitudes, the body produces more erythropoietin, which stimulates the production of red blood cells.

Multiple choice

Which hormone is produced by the pancreas to lower blood sugar levels?

  1. Insulin

  2. Glucagon

  3. Epinephrine

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

Insulin is a hormone produced by the pancreas that helps cells absorb glucose from the blood, lowering blood sugar levels.

Multiple choice

Which hormone produced by the pancreas helps regulate appetite and satiety?

  1. Insulin

  2. Glucagon

  3. Cholecystokinin

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

Cholecystokinin is a hormone produced by the pancreas that signals the gallbladder to release bile and the pancreas to release digestive enzymes.

Multiple choice

Which hormone is primarily responsible for stimulating thirst?

  1. Antidiuretic hormone (ADH)

  2. Oxytocin

  3. Vasopressin

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

Angiotensin II is a hormone that is produced in response to decreased blood volume or blood pressure. It stimulates thirst and also causes vasoconstriction, which helps to increase blood pressure.

Multiple choice

Which hormone is responsible for regulating blood sugar levels?

  1. Insulin

  2. Glucagon

  3. Epinephrine

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

Insulin is the primary hormone responsible for regulating blood sugar levels by promoting the uptake of glucose into cells and inhibiting the production of glucose by the liver.

Multiple choice

Which hormone plays a crucial role in regulating blood sugar levels and energy mobilization during exercise?

  1. Insulin

  2. Glucagon

  3. Epinephrine

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

Glucagon is released during exercise to stimulate the breakdown of glycogen and release glucose into the bloodstream, maintaining blood sugar levels.