Loose-leaf Version for What Is Life? A Guide to Biology 4E & LaunchPad for What is Life? A Guide to Biology 4E (Twelve Month Access)
4th Edition
ISBN: 9781319154639
Author: Jay Phelan
Publisher: W.H. Freeman & Co
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Chapter 25, Problem 5SA
Summary Introduction
To review:
How the stress-response mechanism is controlled by negative feedback loops.
Introduction:
Stress induces the production of hormones that quicken the heart rate, and cause higher levels of alertness.
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For a control system of the short term stress response, identify the regulated variable, the sensors, the effectors, and the type of regulation this system is.
List the major categories of hormones on the basis of their chemical structure.
Describe how hormones interact with tissues to produce a response.
Describe three methods of regulating the release of hormones.
Draw a table to differentiate Nervous System from the Endocrine System in terms of the following: 1. Molecules released 2. Site of action 3. Types of target cells 4. Onset of action 5. Duration of action
Chapter 25 Solutions
Loose-leaf Version for What Is Life? A Guide to Biology 4E & LaunchPad for What is Life? A Guide to Biology 4E (Twelve Month Access)
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- What is the physiological explanation for the negative effects of prolonged stress on health? Talk about stress hormone.arrow_forward“Since endocrine systems are the components of homeostatic feedback loop, co-ordination can be evident in hormone secretion” – explain this statement with an example.arrow_forwardEndocrine regulation of the body is generally significantly slower than neural regulatory mechanisms. Consider the benefits produced by such slow regulation that might have promoted development of this system.arrow_forward
- Describe two examples of steroid hormone action that occur too rapidly to be the consequence of altered levels of protein synthesis.arrow_forwardTrace in a stepwise manner the signaling pathway that involves a g-protein receptor leading to the release of intracellular calcium. Specify what class of hormones would be involved in this pathway.arrow_forwardSignals carried by hormones must eventually be terminated. Describe several different mechanisms for signal termination.arrow_forward
- List the major chemical classes of hormones found in the human body. Compare and contrast the mechanism of response that each class elicitsarrow_forwardRegarding the Endocrine System, describe the regulation of short term and long term stress response. Provide an example if you can.arrow_forwardDistinguish between the genomic and nongenomic actions of steroid hormones. Which mechanism of action would be inhibited by a drug that interfered with protein synthesis? Explain.arrow_forward
- Using your knowledge of the stress response, explain why the physiological changes of the stress response are important to survival in the short term and deleterious when they persist over long periods.arrow_forwardDescribe the mechanism of hormone response resulting from the binding of a hormone with an intracellular receptor.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
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