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March 21, 2025

Endocrine System Quizzes

Anatomy & Physiology Quizzes

Test your knowledge with this Endocrine System Quiz. Challenge yourself with engaging questions about hormones, glands, and their functions in the human body. Ideal for students and health professionals. Take the quiz now and see how much you know.

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Endocrine System

Endocrine System

1 / 16

1. To which group of hormones does aldosterone belong?

1. Catecholamines

2. Glucocorticoids

3. Mineralocorticoids

4. Gonadocorticoids

C: As aldosterone is concerned with the absorption of sodium ions, a_x000d_“mineral”, and aldosterone is produced by the adrenal cortex; it is termed a mineralocorticoid.

2 / 16

2. By what term are hormones derived from tyrosine also known?

1. Amino acid derivatives

2. Peptide hormones

3. Steroid hormones

4. Corticosteroids

A: Catecholamines (adrenaline, noradrenaline), dopamine and thyroid hormone are all derived from tyrosine.

3 / 16

3. What is produced by the beta cells of the pancreas?

1. Angiotensin-converting enzyme

2. Glucocorticoids

3. Glucagon

4. Insulin

D: Beta cells of the pancreatic islets produce insulin. The alpha cells produce glucagon.

4 / 16

4. Which of the following is an amino acid derivative hormone?

1. Epinephrine

2. Tyrosine

3. Testosterone

4. Prostaglandin

A: Epinephrine is derived from the amino acid tyrosine (so tyrosine is a wrong answer).

5 / 16

5. What effect does aldosterone have?

1. It causes glucose to be absorbed from the blood.

2. It cause Na+ to be absorbed in the kidneys.

3. It causes Ca++ to be absorbed from the gut.

4. It causes K+ to be absorbed from the filtrate.

B: Aldosterone causes reclamation of sodium ions from the filtrate and potassium to be secreted in exchange.

6 / 16

6. The hypothalamus produces “releasing hormones”. What do these releasing hormones do?

1. They direct the posterior pituitary to release hormones.

2. They direct the anterior pituitary to release hormones.

3. They direct the gonads to release hormones

4. They act as “second messengers” when hormones bind to their receptor site.

B: The anterior pituitary produces hormones that stimulate other endocrine organs, but the anterior pituitary does not release hormones until directed by the hypothalamus.

7 / 16

7. From where are antidiuretic hormone and oxytocin released?

1. The anterior pituitary

2. The posterior pituitary

3. The adrenal cortex

4. The adrenal medulla

B: ADH and OT are produced in the hypothalamus and transported to the posterior pituitary.

8 / 16

8. What is the difference between an exocrine gland and an endocrine gland?

1. An endocrine gland secretes neurotransmitters (an exocrine gland does not).

2. An endocrine gland secretes via a tube to the destination (an exocrine gland does not).

3. An exocrine gland secretes into the blood (an endocrine gland does not).

4. An endocrine gland secretes into the blood (an exocrine gland does not).

D: Endocrine glands secrete “circulating” hormones, that is, they are secreted into the blood.

9 / 16

9. Which structure controls the endocrine system and integrates the activities of the nervous and endocrine systems?

1. The infundibulum

2. The pituitary gland

3. The thalamus

4. The hypothalamus

D: Hypothalamus secretes regulatory hormones that control endocrine cells in the anterior pituitary gland, produces ADH and oxytocin and contains “autonomic centres” that exert neural control over endocrine cells of the adrenal medullae.

10 / 16

10. Which hormone has the element iodine as part of its molecule?

1. Calcitonin

2. Haemoglobin

3. Thyroxine

4. Parathyroid hormone

C: Thyroxine or thyroid hormone contains iodine.

11 / 16

11. Which endocrine organ produces “releasing hormones” and “inhibitory hormones”?

1. Thyroid

2. Anterior pituitary

3. Hypothalamus

4. Thalamus

C: The hypothalamus controls the secretion of the anterior pituitary by the use of “releasing hormones” and “inhibitory hormones”.

12 / 16

12. What effect does parathyroid hormone have?

1. It increases plasma Ca2+ concentration.

2. It decreases plasma Ca2+ concentration.

3. It increases the rate of ATP formation.

4. It stimulates the thyroid gland to produce thyroxine.

A: PTH increases plasma Ca2+ (calcitonin aids in lowering blood calcium).

13 / 16

13. Which of the following is NOT part of the endocrine system?

1. The thymus

2. The pineal gland

3. The acini cells of the pancreas

4. The posterior pituitary gland

C: The acini cells produce digestive enzymes.

14 / 16

14. Which structure is composed of glandular epithelial tissue?

1. The thalamus

2. The anterior pituitary

3. The posterior pituitary

4. The hypothalamus

B: The anterior pituitary produces and releases six hormones.

15 / 16

15. What effect does aldosterone have? It causes:

1. Angiotensin to be formed from angiotensinogen

2. Na+ to be secreted into the filtrate

3. Na+ and Ca++ to be absorbed from the filtrate and K+ to be secreted into the filtrate

4. Na+ to be absorbed from the filtrate and K+ to be secreted into the filtrate

D: Aldosterone promotes the absorption of sodium from the filtrate, while potassium (also a positively charged ion) is secreted to maintain electrical neutrality.

16 / 16

16. Which one of the statements below is true?

1. The anterior pituitary produces testosterone from cholesterol and releases it when releasing hormones arrive from the hypothalamus.

2. The hypothalamus produces ADH and oxytocin which are stored in the posterior pituitary.

3. The posterior pituitary contains autonomic centres that exert neural control over the adrenal glands.

4. The thalamus produces ADH and oxytocin which are stored in the anterior pituitary.

B: Testosterone is not produced in the pituitary nor does the pituitary contain autonomic centres.

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