Human Endocrine System Quiz - ICSE Class 8 Science

Free practice quiz: Human Endocrine System (ICSE Class 8 Science). 50 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

This ICSE Class 8 Science practice quiz has 50 multiple-choice questions on Human Endocrine System, and 50 of them come with an explanation. Try the 5 sample questions below (tap an option to check yourself), then play the full quiz online. No sign-up needed.

Sample questions

1. Which gland, often referred to as the 'master gland', controls the activity of many other endocrine glands?

   1. Thyroid gland
   2. Adrenal gland
   3. Pituitary gland
   4. Pancreas
   Show answer

   Answer: C. Pituitary gland

   The pituitary gland is called the 'master gland' because it secretes hormones that regulate the functions of other endocrine glands, such as the thyroid gland, adrenal glands, ovaries, and testes.

2. Which of the following is NOT a target organ for hormones secreted by the pituitary gland?

   1. Adrenal cortex
   2. Thyroid gland
   3. Pancreas
   4. Ovaries
   Show answer

   Answer: C. Pancreas

   While the pituitary gland influences many endocrine glands, the pancreas's hormonal regulation (insulin and glucagon) is primarily controlled by blood glucose levels, not directly by pituitary hormones.

3. Which of the following endocrine glands is part of both the endocrine and lymphatic systems and is crucial for the development of the immune system?

   1. Thyroid gland
   2. Adrenal gland
   3. Thymus gland
   4. Pituitary gland
   Show answer

   Answer: C. Thymus gland

   The thymus gland, located in the chest, is essential for the maturation of T-lymphocytes, a vital component of the adaptive immune system. It also produces hormones that regulate immune cell development.

4. A person with a significantly slowed metabolism, weight gain, and feeling cold could be suffering from an underactive thyroid gland, a condition called:

   1. Hyperthyroidism
   2. Hypothyroidism
   3. Diabetes
   4. Cushing's syndrome
   Show answer

   Answer: B. Hypothyroidism

   Hypothyroidism is a condition where the thyroid gland does not produce enough thyroid hormones, leading to a slowed metabolism and associated symptoms.

5. Which hormone, secreted by the adrenal cortex, helps the body cope with long-term stress by regulating metabolism and suppressing the immune system?

   1. Aldosterone
   2. Adrenaline
   3. Cortisol
   4. Thyroxine
   Show answer

   Answer: C. Cortisol

   Cortisol is a glucocorticoid that plays a significant role in the body's response to stress, influencing metabolism and the immune response.

More questions in this quiz

Answers and explanations are in the full quiz.

1. Insulin, a hormone that regulates blood sugar levels, is produced by which organ?
2. The hormone thyroxine, which is essential for regulating metabolism, is produced by the:
3. Which of the following hormones is released by the adrenal medulla and is involved in the 'fight-or-flight' response?
4. The hormone responsible for the development of secondary sexual characteristics in females is:
5. Which endocrine gland is located in the brain, just below the hypothalamus, and plays a role in regulating sleep-wake cycles?
6. Growth hormone, which stimulates growth and cell reproduction, is produced by the:
7. A deficiency in iodine can lead to an enlarged thyroid gland, a condition known as:
8. Which hormone is released by the posterior pituitary gland and stimulates uterine contractions during childbirth and milk ejection during breastfeeding?
9. The endocrine glands that produce sex hormones in males are the:
10. The hormone that lowers blood calcium levels by promoting calcium deposition in bones is:
11. Which gland secretes adrenaline and noradrenaline, crucial for stress response and maintaining blood pressure?
12. What is the primary function of parathyroid hormone (PTH)?
13. Which hormone is responsible for regulating the menstrual cycle and maintaining pregnancy?
14. Diabetes mellitus is primarily a disorder related to the dysfunction of which endocrine gland and its hormone?
15. Which hormone promotes the reabsorption of water in the kidneys, thereby reducing urine output and conserving body water?
16. The adrenal cortex secretes several hormones, including cortisol. What is a primary function of cortisol?
17. Which hormone is responsible for stimulating the production of milk by the mammary glands?
18. The condition of having abnormally high blood sugar is called hyperglycemia. Which hormone's deficiency or malfunction is the primary cause of hyperglycemia?
19. The release of hormones from the anterior pituitary gland is regulated by hormones secreted by the:
20. A person experiencing a significant drop in blood pressure, dehydration, and fatigue might be suffering from a deficiency in hormones produced by the:
21. Which hormone is responsible for the development of secondary sexual characteristics in males, such as a deeper voice and increased muscle mass?
22. Which gland secretes hormones that regulate the body's metabolism and energy production by influencing cellular activity?
23. The hormone that stimulates the release of eggs from the ovary during ovulation is:
24. Acromegaly, a condition characterized by excessive growth of hands, feet, and face in adults, is usually caused by overproduction of which hormone by the pituitary gland?
25. Which hormone helps the body conserve sodium and excrete potassium, thereby regulating blood pressure and electrolyte balance?
26. The adrenal glands are located on top of which organs?
27. Which hormone is secreted by the thymus and is important for the maturation of T-cells, a type of white blood cell vital for immunity?
28. Which hormone is produced by the hypothalamus and released by the posterior pituitary, acting as an antidiuretic to reduce water loss?
29. The development of female reproductive organs and secondary sexual characteristics is primarily influenced by which hormone?
30. Which endocrine gland is responsible for producing melatonin, a hormone that regulates sleep-wake cycles?
31. When blood glucose levels are too high, which hormone is released to lower them?
32. The 'fight-or-flight' response, characterized by increased heart rate and alertness, is primarily mediated by hormones from which gland?
33. Which hormone stimulates the production and release of milk after childbirth?
34. The maintenance of pregnancy is largely supported by the hormone:
35. What is the primary role of the parathyroid glands?
36. A deficiency in ADH can lead to excessive urination and thirst, a condition known as:
37. Which of the following is NOT a direct function of insulin?
38. The hormone that stimulates the development of follicles in the ovary and the production of estrogen is:
39. Which of the following is a hormone produced by the pancreas that raises blood glucose levels?
40. The endocrine system works in conjunction with which other major body system to regulate and coordinate bodily functions?
41. Which hormone is primarily responsible for regulating the basal metabolic rate of the body?
42. The development of secondary sexual characteristics in males is primarily driven by which hormone?
43. Which gland produces hormones that regulate calcium and phosphate levels in the blood?
44. The hormone that helps in the reabsorption of sodium ions and water in the kidneys, thus influencing blood pressure, is:
45. Which of the following is NOT a function of the anterior pituitary gland?

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