Campbell Biology (11th Edition)
11th Edition
ISBN: 9780134093413
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
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Textbook Question
Chapter 45.3, Problem 1CC
If a hormone pathway produces a transient response to a stimulus. how would shortening the stimulus duration affect the need for negative feedback?
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Chapter 45 Solutions
Campbell Biology (11th Edition)
Ch. 45.1 - How do response mechanisms in target cells differ...Ch. 45.1 - What type of gland would you expect to secrete...Ch. 45.1 - WHAT IF? Predict what would happen if you...Ch. 45.2 - What are the roles of oxytocin and prolactin in...Ch. 45.2 - How do the two fused glands of the pituitary gland...Ch. 45.2 - WHAT IF? 2192 Propose an explanation for why...Ch. 45.2 - what if? Lab tests of two patients, each...Ch. 45.3 - If a hormone pathway produces a transient response...Ch. 45.3 - Prob. 2CCCh. 45.3 - Prob. 3CC
Ch. 45 - MAKE CONNECTIONS What forms of signaling activate...Ch. 45 - Which major endocrine organs described in Figure...Ch. 45 - Prob. 45.3CRCh. 45 - Which of the following is not an accurate...Ch. 45 - Prob. 2TYUCh. 45 - Growth factors are local regulators that (A) are...Ch. 45 - Prob. 4TYUCh. 45 - Prob. 5TYUCh. 45 - Which of the following is the most likely...Ch. 45 - The relationship between the insect hormones...Ch. 45 - DRAW IT In mammals, milk production by mammary...Ch. 45 - Prob. 9TYUCh. 45 - Prob. 10TYUCh. 45 - Level 3: Synthesis/Evaluation 11. WRITE ABOUT A...Ch. 45 - Prob. 12TYU
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- Describe how hormone receptors can play a role in affecting the size of the responses of tissues to hormones.arrow_forwardIf a hormone interacts with a membrane-bound receptor, then the cell’s DNA will be stimulated to synthesize and secrete a protein. True or False?arrow_forwardLong-loop feedback does not exist for prolactin. Explain why?arrow_forward
- Distingish steroid from amino acid based hormones. Which act via second messenger system? Why must they use this method of target cell stimulation? Short answerarrow_forwardSuppose that two different organs, such as the liver and heart, are sensitive to a particular hormone (such as epinephrine). The cells in both organs have identical receptors for the hormone, and hormone-receptor binding produces the same intracellular second messenger in both organs. However, the hormone produces different effects in the two organs. Explain how this can happen.arrow_forwardWhat is it that provides the negative feedback signal for a hormone that is regulated by a humoral stimulus? Explain.arrow_forward
- Feedback loops regulate the release of hormones in either a positive or negative loop. Consider this example: The hypothalamus releases thyrotropin releasing hormone (TRH), which stimulates the pituitary to release the TSH (thyroid stimulating hormone). TSH then stimulates thyroid gland to release thyroid hormone. When elevated levels of thyroid hormone are detected by the hypothalamus and pituitary further release of TRH and TSH is suppressed. b. What would happen to the levels of TRH and TSH if a tumor of the thyroid gland were discovered resulting in uncontrolled release of the thyroid hormone from the tumor itself? * Your answer (LENGHT DOESN'T MATTER, I NEED IT ASASP PLEASE)arrow_forwardThe posterior pituitary gland stores and releases the hormones oxytocin and ADH. The secretion of each hormone is regulated differently.Explain the difference between positive and negative feedback using the feedback pathways for oxytocin and ADH as examples.arrow_forwardFeedback loops regulate the release of hormones in either a positive or negative 上二三一三 I loop. Consider this example: The hypothalamus releases thyrotropin-releasing hormone (TRH), which stimulates the pituitary to release the TSH (thyroid-stimulating hormone). TSH then stimulates thyroid gland to release thyroid hormone. When elevated levels of thyroid hormone are detected by the hypothalamus and pituitary further release of TRH and TSH is suppressed. B. What would happen to the levels of TRH and TSH if a tumor of the thyroid gland were discovered resulting in uncontrolled release of the thyroid hormone from the tumor itself?arrow_forward
- Explain the basis of the fact that nervous control is rapid but of short-duration, whereas hormonal control takes time to start but the effects last a long time. How would body function change if the rate of hormone degradation increased? Decreased?arrow_forwardThe action of thyroid hormone to increase the effect of epinephrine would be an example of a: antagonistic effect synergistic effect O priming effect O permissive effectarrow_forwardExplain how the pituitary gland and parathyroid hormone are neuroendocrine glands.arrow_forward
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