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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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1 votes, 5 avg

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Endocrine System

Endocrine System

1 / 16

1. 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.

2 / 16

2. 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).

3 / 16

3. 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.

4 / 16

4. 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.

5 / 16

5. 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.

6 / 16

6. 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.

7 / 16

7. 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.

8 / 16

8. 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.

9 / 16

9. What hormone is produced by the parafollicular cells of the thyroid gland?

1. Parathyroid hormone

2. Calcitonin

3. Thyroid hormone

4. Thyroxine

B: Parafollicular (or “C”) cells of the thyroid produce calcitonin which aids in lowering of blood calcium.

10 / 16

10. 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.

11 / 16

11. What hormone does the thyroid produce?

1. Thyroid-stimulating hormone

2. Calcitriol

3. Thyroxine

4. Parathyroid hormone

C: Thyroxine (or tetraiodothyronine) is converted to triiodothyronine in_x000D_target tissues.

12 / 16

12. Which statement applies to steroid hormones?

1. They are transported dissolved in blood.

2. They bind to receptor proteins on the outside of the plasma membrane.

3. They cross the plasma membrane by using a protein carrier mechanism.

4. They bind to receptors in the cell cytoplasm or nucleus.

D: As steroid hormones are lipid soluble, their receptors are inside the cell as they can cross the plasma membrane.

13 / 16

13. Which of the following hormones CANNOT be given orally?

1. Sex hormones

2. Amino acid-based hormones

3. Thyroid hormones

4. Steroids

14 / 16

14. Iodine is an essential component of which hormone?

1. Thyroid hormones

2. Aldosterone

3. Thyroid-stimulating hormones

4. Parathyroid hormone

A: Thyroid hormones T3 and T4 contain three and four iodine atoms, respectively.

15 / 16

15. 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”.

16 / 16

16. Which hormones are soluble in blood?

1. Steroid hormones

2. Hormones produced by the adrenal cortex

3. The sex hormones

4. Those released by the pituitary gland

D: The pituitary gland releases peptide hormones which are soluble in blood. The other choices refer to steroid hormones which are insoluble in blood. They require transport via plasma proteins.

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