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CAMPBELL BIOLOGY TENTH EDITION Reece • Urry • Cain • Wasserman • Minorsky • Jackson 45 Hormones and the Endocrine System Clicker Questions by Lisa M. Flick, Ph.D. © 2014 Pearson Education, Inc. What type of signaling is involved if the target receptor is located on the same cell that produced the hormone? a) paracrine b) autocrine c) neuroendocrine d) exocrine e) synaptic © 2014 Pearson Education, Inc. What type of signaling is involved if the target receptor is located on the same cell that produced the hormone? a) paracrine b) autocrine c) neuroendocrine d) exocrine e) synaptic © 2014 Pearson Education, Inc. Where are the receptors for lipid-soluble hormones located? a) on the plasma membrane of the target cell b) in the nucleus of the target cell c) in the cytoplasm of the target cell d) in the blood plasma e) all of the above © 2014 Pearson Education, Inc. Where are the receptors for lipid-soluble hormones located? a) on the plasma membrane of the target cell b) in the nucleus of the target cell c) in the cytoplasm of the target cell d) in the blood plasma e) all of the above © 2014 Pearson Education, Inc. Hormone pathways involved in maintaining homeostasis (such as the secretin pathway in the digestive tract) are often characterized by which of the following? a) negative feedback b) positive feedback c) local regulators such as prostaglandins d) multiple types of receptors e) G-protein-coupled receptors © 2014 Pearson Education, Inc. Hormone pathways involved in maintaining homeostasis (such as the secretin pathway in the digestive tract) are often characterized by which of the following? a) negative feedback b) positive feedback c) local regulators such as prostaglandins d) multiple types of receptors e) G-protein-coupled receptors © 2014 Pearson Education, Inc. Which of the following statements about diabetes mellitus is correct? a) It is characterized by large volumes of dilute urine. b) It results when the body produces too much glucagon. c) Type II diabetes requires insulin replacement therapy. d) Type II diabetes is an autoimmune disorder. e) Type I diabetes features high blood glucose levels due to insufficient insulin production. © 2014 Pearson Education, Inc. Which of the following statements about diabetes mellitus is correct? a) It is characterized by large volumes of dilute urine. b) It results when the body produces too much glucagon. c) Type II diabetes requires insulin replacement therapy. d) Type II diabetes is an autoimmune disorder. e) Type I diabetes features high blood glucose levels due to insufficient insulin production. © 2014 Pearson Education, Inc. In human hormone cascades, what is the correct sequence in which these structures become involved, starting with the organ at the beginning of the cascade? (NOTE: Not all organs listed are included in all options.) 1. nonendocrine target 2. anterior pituitary gland 3. posterior pituitary gland a) 2, 3, 5, 1, 4 b) 2, 4, 3, 1, 5 c) 4, 2, 3, 5, 1 d) 4, 3, 5, 1 e) 4, 2, 5, 1 © 2014 Pearson Education, Inc. 4. hypothalamus 5. specific endocrine gland In human hormone cascades, what is the correct sequence in which these structures become involved, starting with the organ at the beginning of the cascade? (NOTE: Not all organs listed are included in all options.) 1. nonendocrine target 2. anterior pituitary gland 3. posterior pituitary gland a) 2, 3, 5, 1, 4 b) 2, 4, 3, 1, 5 c) 4, 2, 3, 5, 1 d) 4, 3, 5, 1 e) 4, 2, 5, 1 © 2014 Pearson Education, Inc. 4. hypothalamus 5. specific endocrine gland Men who overuse synthetic testosterone (as in anabolic steroids) may experience testicular atrophy, reduced sperm count, and low levels of circulating FSH. The physiological explanation for these observations is a) that synthetic testosterone is not as effective as natural testosterone. b) negative feedback. c) positive feedback. d) that such men have inadequate numbers of FSH receptors. e) that such men have inadequate numbers of testosterone receptors. © 2014 Pearson Education, Inc. Men who overuse synthetic testosterone (as in anabolic steroids) may experience testicular atrophy, reduced sperm count, and low levels of circulating FSH. The physiological explanation for these observations is a) that synthetic testosterone is not as effective as natural testosterone. b) negative feedback. c) positive feedback. d) that such men have inadequate numbers of FSH receptors. e) that such men have inadequate numbers of testosterone receptors. © 2014 Pearson Education, Inc. Which of the following is not a product of the anterior pituitary gland? a) prolactin b) thyroid stimulating hormone c) thyrotropin-releasing hormone d) luteinizing hormone e) growth hormone © 2014 Pearson Education, Inc. Which of the following is not a product of the anterior pituitary gland? a) prolactin b) thyroid stimulating hormone c) thyrotropin-releasing hormone d) luteinizing hormone e) growth hormone © 2014 Pearson Education, Inc. All of these statements about growth hormone are correct except a) absence may lead to pituitary dwarfism. b) excess hormone in adults results in gigantism. c) growth hormone is an antagonist of insulin. d) one target is the liver. e) acromegaly occurs in adults that overproduce growth hormone. © 2014 Pearson Education, Inc. All of these statements about growth hormone are correct except a) absence may lead to pituitary dwarfism. b) excess hormone in adults results in gigantism. c) growth hormone is an antagonist of insulin. d) one target is the liver. e) acromegaly occurs in adults that overproduce growth hormone. © 2014 Pearson Education, Inc. Which hormone is correctly paired with its function? a) parathyroid hormone – lowers blood calcium b) glucocorticoids – decrease blood glucose c) norepinephrine – reduce heart rate d) melatonin – promotes sleep e) aldosterone – increases sodium excretion by kidneys © 2014 Pearson Education, Inc. Which hormone is correctly paired with its function? a) parathyroid hormone – lowers blood calcium b) glucocorticoids – decrease blood glucose c) norepinephrine – reduce heart rate d) melatonin – promotes sleep e) aldosterone – increases sodium excretion by kidneys © 2014 Pearson Education, Inc. How would a decrease in the number of corticosteroid receptors in the hypothalamus affect levels of corticosteroids in the blood? a) Blood levels will decline due to negative feedback. b) Blood levels will not change because there are no receptors to respond to corticosteroids. c) Blood levels will rise due to positive feedback. d) Blood levels will rise because the hypothalamus can no longer sense excess hormone and shut down the pathway. © 2014 Pearson Education, Inc. How would a decrease in the number of corticosteroid receptors in the hypothalamus affect levels of corticosteroids in the blood? a) Blood levels will decline due to negative feedback. b) Blood levels will not change because there are no receptors to respond to corticosteroids. c) Blood levels will rise due to positive feedback. d) Blood levels will rise because the hypothalamus can no longer sense excess hormone and shut down the pathway. © 2014 Pearson Education, Inc. Scientific Skills Questions © 2014 Pearson Education, Inc. This graph shows the change in mass of two young mice from the same litter over time. One of the two mice was injected with a substance secreted by an endocrine gland. Which mouse was injected? a) mouse I b) mouse II © 2014 Pearson Education, Inc. This graph shows the change in mass of two young mice from the same litter over time. One of the two mice was injected with a substance secreted by an endocrine gland. Which mouse was injected? a) mouse I b) mouse II © 2014 Pearson Education, Inc. This graph shows the change in mass of two young mice from the same litter over time. One of the two mice was injected with a substance secreted by an endocrine gland. Which gland secretes the substance that was injected? a) adrenal gland b) pancreas c) thyroid gland d) anterior pituitary e) testes © 2014 Pearson Education, Inc. This graph shows the change in mass of two young mice from the same litter over time. One of the two mice was injected with a substance secreted by an endocrine gland. Which gland secretes the substance that was injected? a) adrenal gland b) pancreas c) thyroid gland d) anterior pituitary e) testes © 2014 Pearson Education, Inc. This graph shows the change in mass of two young mice from the same litter over time. One of the two mice was injected with a substance secreted by an endocrine gland. What hormone was injected? a) ACTH b) calcitonin c) testosterone d) thyroxine e) growth hormone © 2014 Pearson Education, Inc. This graph shows the change in mass of two young mice from the same litter over time. One of the two mice was injected with a substance secreted by an endocrine gland. What hormone was injected? a) ACTH b) calcitonin c) testosterone d) thyroxine e) growth hormone © 2014 Pearson Education, Inc.