Animal Endocrinology MCQS January 8, 2026March 26, 2024 by u930973931_answers 20 min Score: 0 Attempted: 0/20 Subscribe 1. What is endocrinology? (A) The study of animal behavior (B) The study of the nervous system (C) The study of hormones and their functions in animals (D) The study of genetics 2. Which of the following is NOT a major endocrine gland in animals? (A) Pancreas (B) Adrenal gland (C) Thyroid gland (D) Pituitary gland 3. What is the primary function of hormones in animal endocrinology? (A) To regulate sleep patterns (B) To transmit nerve impulses (C) To coordinate physiological processes and maintain homeostasis (D) To promote cell division 4. Which hormone regulates blood glucose levels in animals? (A) Thyroxine (B) Insulin (C) Testosterone (D) Estrogen 5. What is the role of the hypothalamus in endocrine regulation? (A) To produce and release hormones directly into the bloodstream (B) To control the secretion of hormones by the pituitary gland (C) To regulate body temperature (D) To promote muscle growth 6. Which hormone is responsible for stimulating milk production in lactating mammals? (A) Estrogen (B) Progesterone (C) Oxytocin (D) Testosterone 7. How does the pituitary gland control other endocrine glands in animals? (A) By releasing hormones that stimulate or inhibit the activity of other glands (B) By regulating sleep patterns (C) By promoting cell division (D) By controlling body temperature 8. What is the primary function of the adrenal glands in animals? (A) To regulate blood sugar levels (B) To regulate body temperature (C) To promote bone growth (D) To produce hormones involved in stress response and metabolism 9. Which hormone is responsible for regulating water balance and blood pressure in animals? (A) Cortisol (B) Growth hormone (C) Thyroxine (D) Aldosterone 10. What is the role of the thyroid gland in animal endocrinology? (A) To control metabolism and energy expenditure (B) To regulate body temperature (C) To produce insulin (D) To promote cell division 11. Which hormone stimulates the development and maintenance of female secondary sexual characteristics? (A) Testosterone (B) Estrogen (C) Progesterone (D) Prolactin 12. How does the parathyroid gland contribute to calcium regulation in animals? (A) By releasing hormones that increase calcium levels in the blood (B) By promoting calcium absorption in the intestines (C) By promoting calcium excretion in the urine (D) By regulating sleep patterns 13. What is the primary function of insulin in animal endocrinology? (A) To regulate sleep patterns (B) To promote cell division (C) To control body temperature (D) To promote glucose uptake by cells and lower blood sugar levels 14. Which hormone is involved in the regulation of circadian rhythms and sleep-wake cycles in animals? (A) Progesterone (B) Estrogen (C) Melatonin (D) Growth hormone 15. What is the role of glucagon in animal endocrinology? (A) To stimulate the breakdown of glycogen and increase blood sugar levels (B) To promote fat storage (C) To decrease blood sugar levels (D) To regulate sleep patterns 16. Which hormone is responsible for stimulating ovulation and maintaining pregnancy in female mammals? (A) Testosterone (B) Progesterone (C) Estrogen (D) Prolactin 17. How does cortisol contribute to the stress response in animals? (A) By increasing blood sugar levels and mobilizing energy stores (B) By promoting sleep (C) By regulating body temperature (D) By promoting cell division 18. What is the function of testosterone in male animals? (A) To stimulate milk production (B) To promote development of male secondary sexual characteristics and reproductive functions (C) To regulate bone growth (D) To control body temperature 19. Which hormone is responsible for stimulating red blood cell production in animals? (A) Thyroxine (B) Estrogen (C) Progesterone (D) Erythropoietin 20. How does leptin contribute to appetite regulation and metabolism in animals? (A) By promoting sleep (B) By regulating body temperature (C) By suppressing appetite and increasing energy expenditure (D) By promoting cell division