Chap 48 Endocrine

Chap 48 Endocrine - Name: _ Class: _ Date: _ Chap 48...

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Name: ________________________ Class: ___________________ Date: __________ ID: A 1 Chap 48 Endocrine Multiple Choice Identify the choice that best completes the statement or answers the question. ____ 1. Hormones are chemical messengers transported by the __________ that can have __________. a. blood: stimulatory or inhibitory effects b. lymph ducts; stimulatory effects c. ducts; stimulatory or inhibitory effects d. neurons; stimulatory effects e. glands; inhibitory effects ____ 2. The products of an endocrine gland: a. only affect their own tissues. b. can have a digestive function. c. always stimulate the target tissue. d. generally have to travel to reach the target tissue. e. are not produced by cells in organs, such as the heart. ____ 3. Why doesn't every cell in the body respond to every hormone circulating in the bloodstream? a. Each cell has a limited number of protein channels that shuttle hormones through its membrane. b. Not all hormones can diffuse through all cell membranes. c. The concentration of some hormones is too low to stimulate every cell. d. Each cell has specific surface receptors, which interact only with hormones that they recognize. e. Although all hormones bind to all cell surfaces, some cells lack second messengers for expression. ____ 4. By what method can hormones regulate their effects on cells? a. negative feedback b. receptor up-regulation c. receptor down-regulation d. signal transduction e. All of these. ____ 5. What is the difference between endocrine and exocrine glands? a. Endocrine glands are discrete structures, while exocrine glands may be specialized cells in other tissues. b. Exocrine glands produce hormones, while endocrine glands do not. c. Endocrine glands only affect cells in the immediate area, while exocrine glands do not. d. Endocrine glands secrete into the interstitial fluid, while exocrine glands release secretions into ducts. e. Exocrine glands secrete neurohormones, while endocrine glands do not. ____ 6. Which of the following is not a chemical group to which hormones can be assigned? a. steroid hormones b. polysaccharide hormones c. amino acid derivatives d. peptide hormones e. fatty acid derivatives
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Name: ________________________ ID: A 2 ____ 7. Which of the following is a modified fatty acid? a. prostaglandin b. cyclic AMP c. thyroid hormone d. epinephrine e. melatonin ____ 8. All of the following hormones are synthesized from cholesterol except : a. cortisol. b. estrogen. c. progesterone. d. testosterone. e. prostaglandin. ____ 9. Which of the following is not a peptide hormone? a. calcitonin b. ACTH c. progesterone d. secretin e. glucagon Figure 48-1 Use the figure to answer the corresponding question(s). ____ 10. At point 1 in Figure 48-1:
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Chap 48 Endocrine - Name: _ Class: _ Date: _ Chap 48...

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