34 1 point Sometimes prolonged excessive exposure to high hormone concentrations causes a phenomenon k negative feedback down-regulation up-regulation Answer B or C may be caused by prolonged high hormone concentrations
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Step 1: Prolonged exposure to high hormone concentrations can cause a phenomenon known as down-regulation. Show more…
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Explain why it would be problematic if most hormones were regulated by a positive feedback loop. a. Excessive production of actions would be stimulated by hormones such as growth and blood glucose levels. b. Production of actions would be reduced by hormones such as growth and blood glucose levels. c. Inhibition of GnRH production by increase in gonad hormone levels. d. Inhibition of release of insulin by decrease in blood glucose concentrations.
31. Administering antibodies to testosterone would cause 32. Negative feedback effects of sex hormones on pulse generator in males: A. Acquisition of ability of gonads to secrete sex steroids. B. Decrease in GPR54 receptor concentration. C. Increase in secretion of neuropeptides. D. Increase in secretions of estradiol by testes.
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Describe how it is possible for the presence of a hormone in the blood to lead to an increase in the size of a gland, even when there are no receptors for that specific hormone located on that gland. (i.e., describe how indirect effects of hormones are normally produced) What is negative feedback? How does a negative feedback loop regulate hormone release? Which of the unknown hormones here showed a negative feedback effect? How do we know this? Define hypertrophy. Explain what kind of cellular changes a hormone would have to make to cause hypertrophy of its target tissue/organ. Explain the purpose of injecting saline into the control rats in this experiment.
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