Đề thi, bài tập trắc nghiệm online Sinh lý nội tiếtĐề 6 – Bài tập, đề thi trắc nghiệm online Sinh lý nội tiết Đăng vào 2 Tháng 5, 2026 bởi admin Đề 6 – Bài tập, đề thi trắc nghiệm online Sinh lý nội tiết Đề 6 – Bài tập, đề thi trắc nghiệm online Sinh lý nội tiết Số câu30Quiz ID10636 Làm bài Câu 1 1. What is the primary function of parathyroid hormone (PTH)? A A. To lower blood calcium levels. B B. To increase blood calcium levels. C C. To regulate blood glucose levels. D D. To control blood pressure. Câu 2 2. Negative feedback loops are essential for maintaining hormonal homeostasis. Which of the following is an example of a negative feedback loop in the endocrine system? A A. The release of oxytocin during childbirth, leading to stronger uterine contractions. B B. The increase in blood glucose levels after a meal, stimulating insulin release. C C. The decrease in blood calcium levels, triggering the release of parathyroid hormone (PTH). D D. The surge of LH (luteinizing hormone) leading to ovulation. Câu 3 3. Hormones are chemical messengers that travel through the bloodstream to target cells. What is the PRIMARY mechanism by which steroid hormones exert their effects on target cells? A A. Binding to membrane receptors and activating second messenger systems. B B. Entering the cell and binding to intracellular receptors, influencing gene expression. C C. Stimulating the release of other hormones from the pituitary gland. D D. Directly altering the permeability of the plasma membrane. Câu 4 4. What is the main function of aldosterone, a hormone produced by the adrenal cortex? A A. Regulating blood glucose levels during fasting. B B. Controlling the stress response and inflammation. C C. Regulating sodium and potassium balance and blood pressure. D D. Promoting bone growth and calcium absorption. Câu 5 5. What is the primary function of glucagon? A A. To lower blood glucose levels. B B. To increase blood glucose levels. C C. To promote protein synthesis. D D. To regulate blood pressure. Câu 6 6. What is the primary function of melatonin? A A. Regulation of blood glucose. B B. Regulation of the sleep-wake cycle. C C. Regulation of appetite. D D. Regulation of body temperature. Câu 7 7. The hypothalamus plays a crucial role in the endocrine system. What is the PRIMARY function of the hypothalamus in endocrine regulation? A A. Directly secreting hormones that control peripheral tissues. B B. Producing hormones that regulate the anterior pituitary gland. C C. Filtering toxins from the blood before it reaches endocrine glands. D D. Storing hormones produced by the pituitary gland. Câu 8 8. Which hormone is primarily responsible for stimulating milk production in mammary glands after childbirth? A A. Oxytocin B B. Prolactin C C. Estrogen D D. Progesterone Câu 9 9. Which of the following endocrine disorders is characterized by hyperglycemia due to insulin resistance or deficiency? A A. Hypothyroidism B B. Diabetes Mellitus C C. Cushing′s Syndrome D D. Addison′s Disease Câu 10 10. Addison′s disease is characterized by a deficiency in which hormones? A A. Thyroid hormones. B B. Insulin and glucagon. C C. Cortisol and aldosterone. D D. Estrogen and progesterone. Câu 11 11. What is Cushing′s syndrome primarily caused by? A A. Deficiency of cortisol. B B. Excessive cortisol production. C C. Deficiency of thyroid hormones. D D. Excessive growth hormone secretion. Câu 12 12. Which gland is located in the neck, inferior to the larynx, and is butterfly-shaped? A A. Parathyroid gland B B. Adrenal gland C C. Thyroid gland D D. Pituitary gland Câu 13 13. What is the primary role of the thyroid hormones (T3 and T4) in the body? A A. Regulation of blood pressure. B B. Control of calcium levels in the blood. C C. Regulation of metabolic rate and body temperature. D D. Stimulation of red blood cell production. Câu 14 14. Which of the following best describes the mechanism of action of thyroid hormones? A A. They bind to membrane receptors and activate G proteins. B B. They enter the nucleus and directly bind to DNA. C C. They enter cells and bind to intracellular receptors, influencing gene transcription. D D. They alter membrane permeability to ions. Câu 15 15. Which hormone is responsible for the 'fight or flight′ response, leading to increased heart rate and bronchodilation? A A. Cortisol B B. Insulin C C. Epinephrine D D. Thyroxine Câu 16 16. Which of the following hormones is involved in regulating calcium levels by decreasing bone resorption and increasing calcium excretion by the kidneys? A A. Parathyroid Hormone (PTH) B B. Calcitonin C C. Vitamin D D D. Growth Hormone (GH) Câu 17 17. What is the primary mechanism of action for non-steroid hormones? A A. Directly altering gene transcription in the nucleus. B B. Binding to intracellular receptors and forming hormone-receptor complexes. C C. Binding to membrane receptors and activating second messenger systems. D D. Entering the cell and directly modifying protein structure. Câu 18 18. What is the role of antidiuretic hormone (ADH), also known as vasopressin, in the body? A A. To lower blood glucose levels. B B. To increase sodium excretion. C C. To promote water reabsorption in the kidneys. D D. To stimulate thirst. Câu 19 19. What is the primary target tissue for growth hormone (GH)? A A. Pancreas B B. Adrenal gland C C. Liver and bones D D. Thyroid gland Câu 20 20. Which of the following hormones is primarily responsible for regulating blood glucose levels by promoting glucose uptake into cells and glycogen synthesis in the liver? A A. Glucagon B B. Cortisol C C. Insulin D D. Epinephrine Câu 21 21. Which hormone plays a key role in the uterine contractions during labor and delivery? A A. Prolactin B B. Estrogen C C. Oxytocin D D. Progesterone Câu 22 22. In type 1 diabetes mellitus, what is the underlying cause of hyperglycemia? A A. Insulin resistance in target cells. B B. Autoimmune destruction of pancreatic beta cells. C C. Excessive secretion of glucagon. D D. Increased glucose production by the liver. Câu 23 23. Which of the following is a water-soluble hormone? A A. Cortisol B B. Thyroxine (T4) C C. Insulin D D. Testosterone Câu 24 24. What is the primary hormone secreted by the adrenal medulla in response to stress? A A. Cortisol B B. Aldosterone C C. Epinephrine (Adrenaline) D D. Growth Hormone Câu 25 25. Which of the following hormones is NOT secreted by the anterior pituitary gland? A A. Growth Hormone (GH) B B. Thyroid-Stimulating Hormone (TSH) C C. Antidiuretic Hormone (ADH) D D. Adrenocorticotropic Hormone (ACTH) Câu 26 26. What is the main role of estrogen in females? A A. Promoting milk production. B B. Regulating blood glucose levels. C C. Developing and maintaining female secondary sexual characteristics. D D. Stimulating uterine contractions during childbirth. Câu 27 27. What is the role of luteinizing hormone (LH) in males? A A. Stimulating sperm production (spermatogenesis). B B. Promoting the development of secondary sexual characteristics. C C. Stimulating testosterone production in Leydig cells. D D. Inhibiting follicle-stimulating hormone (FSH) release. Câu 28 28. Which hormone is primarily responsible for stimulating follicle development in the ovaries and sperm production in the testes? A A. Luteinizing Hormone (LH) B B. Follicle-Stimulating Hormone (FSH) C C. Prolactin D D. Growth Hormone (GH) Câu 29 29. Which gland is often referred to as the 'master gland′ of the endocrine system due to its control over many other endocrine glands? A A. Thyroid gland B B. Adrenal gland C C. Pituitary gland D D. Pancreas Câu 30 30. Which of the following is a characteristic of hormone receptors? A A. They are typically located in the extracellular matrix. B B. They are highly specific for a particular hormone. C C. They are produced by target cells only after hormone exposure. D D. They are always located on the cell membrane. Đề 5 – Bài tập, đề thi trắc nghiệm online Hệ thống thông tin quản lý Đề 7 – Bài tập, đề thi trắc nghiệm online Tuyển dụng nhân lực
