Endocrine Glands

Endocrine Glands - Guided Reading - Endocrine Glands I 1....

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Guided Reading - Endocrine Glands I 1. What is the function of prolactin in females? A. stimulates milk production in the mammary glands B. regulates the gonadotropins C. regulates water and electrolyte balance in the kidneys D. All of the choices and correct. 2. Which of the following is NOT an effect of glucagon secretion? A. lipolysis B. ketogenesis C. glycogenesis D. glycogenolysis 3. What is the protein found in the colloid of a thyroid follicle? A. thyroglobulin B. gammaglobulin C. iodoglobulin D. betaglobulin 4. Regulation of mineral homeostasis would be inhibited due to decreased secretion of A. corticotropin releasing hormone. B. dopamine. C. gondadotropin releasing hormone. D. growth hormone releasing hormone. 5. What is the function of the hypothalamo-hypophyseal tract? A. transports releasing hormones from the hypothalamus to the anterior pituitary B. transports nerve impulse from the hypothalamus to the anterior pituitary C. transports hormones and nerve impulses from the hypothalamus to the posterior pituitary D. All of the choices are correct. 6. Which of the following is NOT true about a chemical functioning in physiological regulation A. There must be a mechanism to turn off the chemical's action. B. The chemicals must be secreted by endocrine glands. C. Target cell must have specific receptor molecules for the chemical. D. The combination of the chemical and its receptor must cause specific changes to occur in the target cell. 7. Second messengers generated by the actions of phospholipase C A. are inhibited by the actions of caffeine. B. are stimulated by phosphodiesterases. C. may activate calmodulin. D. stimulate gene transcription. 8. Molecules that are produced within one tissue but regulate a different tissue of the same organ are called A. autocrine regulators. B. endocrine regulators. C. paracrine regulators. D. exocrine regulators.
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9. Melatonin can pass through plasma membranes since it is derived from the nonpolar amino acid tryptophan. True False 10. Binding of epinephrine to beta-adrenergic receptors in the plasma membrane will activate the ______ second messenger system. A. calcium B. IP 3 C. adenylate cyclase (cAMP) D. DAG 11. Activated calmodulin will, in turn, activate protein kinases. True False 12. Dual glands, like the pancreas, have both endocrine and exocrine functions. True False 13. What is the function of prolactin in males? A. stimulates growth of sperm cells B. stimulates milk production in the mammary glands C. regulates water and electrolyte balance in the kidneys D. None of the choices is correct. 14. Molecules secreted by endocrine glands that are inactive until changed by their target cells are A. prohormones. B. lipophilic hormones.
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Endocrine Glands - Guided Reading - Endocrine Glands I 1....

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