Essentials of Human Anatomy & Physiology Laboratory Manual (7th Edition)
7th Edition
ISBN: 9780134424835
Author: Elaine N. Marieb, Pamela B. Jackson
Publisher: PEARSON
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Chapter 1, Problem 22CT
Summary Introduction
To analyze:
Whether the feedback system is positive or negative during the blood clotting process.
Introduction:
The homeostasis is the tendency of the body of a living organism to maintain the relatively balanced or stable internal environment, even though the external environment changes continuously. The components or factors like receptor, control center, effector, and feedback are components of homeostasis that bring about the changes involved in maintaining the internal environment of an organism.
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The diagram in Figure 5 shows the difference between negative feedback and positive feedback.
(i)Explain why negative feedback is important in homeostasis. (ii)Explain how negative feedback enables the carotid and aortic bodies and the medulla to maintain a constant blood carbon dioxide level. (iii)It is said that the initiation of an Action Potential is an example of positive feedback. With reference to the process involved, state why you think this statement is accurate?
One of the current major areas of research in heart transplants is the use of pig hearts for human transplants. Since pig and human hearts are virtually identical anatomically, researchers feel that it can make hearts available to everyone that needs one. Should the organs of pigs (or any other animals) be used to preserve the lives of humans? Why or why not?
An example of a positive feedback mechanism is blood clotting in which certain clotting factors active other factors until a plug forms to stop bleeding. Is this process involved in homeostasis?
no, positive feedback mechanisms cannot regulate homeostasis
no, it is not a negative feedback mechanism
no, it does not fit into a classic "push-pull" action
no, because it does not result in restoring blood volume
O yes, because it is part of a bigger negative feedback mechanism to maintain optimal levels of blood volume.
E O O O O C
Chapter 1 Solutions
Essentials of Human Anatomy & Physiology Laboratory Manual (7th Edition)
Ch. 1 - Prob. 1MCCh. 1 - Prob. 2MCCh. 1 - More than one choice may apply. Using the terms...Ch. 1 - Match the proper anatomical term (column B) with...Ch. 1 - Anatomical terms that apply to the backside of the...Ch. 1 - A neurosurgeon orders a spinal tap for a patient....Ch. 1 -
7. Which of the following groupings of the...Ch. 1 - Which of the following is (are) involved in...Ch. 1 - Define anatomy and physiology.Ch. 1 - List the 11 organ systems of the body, briefly...
Ch. 1 - Many body structures are symmetrical. Are the...Ch. 1 - 12. On what body surface is each of the following...Ch. 1 - 13. Which of the following organ...Ch. 1 - Explain the meaning of bomeostasis as applied to...Ch. 1 - 15. What is the consequence of loss of...Ch. 1 - 16. A nurse informed John that she was about to...Ch. 1 - Jennifer fell off her motorcycle and tore a nerve...Ch. 1 - Mr. Garica is behaving abnormally and doctors...Ch. 1 - 19. Parathyroid hormone (PTH) is secreted in...Ch. 1 - 20. Mr. Harvey, a computer programmer, has been...Ch. 1 - Prob. 21CTCh. 1 - Prob. 22CTCh. 1 - 23. How is the concept of homeostasis (or its...
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