ANAT. &PHYS. >CB<
8th Edition
ISBN: 9781260681154
Author: SALADIN
Publisher: MCG
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Textbook Question
Chapter 1, Problem 7TYR
A self-amplifying chain of physiological events is called
- a. positive feedback.
- b. negative feedback.
- c. dynamic constancy.
- d. homeostasis.
- e.
metabolism .
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Students have asked these similar questions
Which of the following is the correct definition of positive feedback?
a
The process by which the body neglects homeostasis.
b
A mechanism in which the body's response to a stimulis opposes the stimulus.
c
A mechanism whereby the body responds to a stimulus by acting to enhance the stimulus
d
The dynamic equilibrium maintained by an integrating center which causes an effector to respond to the stimulus received by the receptor.
Which of these statements about homeostasis is true? a.The internal environment is maintained absolutely constant. b.Negative feedback mechanisms act to correct deviations from a normal range within the internal environment. c.Homeostasis is maintained by turning effectors on and off. d.All of these are true.
Positive feedback processes invloves :
a) Work in anticipation of changes in regulated variable
b) Lead to instability of the regulated variable.
c) Tend to force physiological variables back to set point, opposite direction of deviation
d) Ten to force physiological variables away from their set point, further deviating it
Chapter 1 Solutions
ANAT. &PHYS. >CB<
Ch. 1.1 - What is the difference between anatomy and...Ch. 1.1 - Name the method that would be used for each of the...Ch. 1.1 - The meanings of anatomy and physiology and what it...Ch. 1.1 - Prob. 2AYLOCh. 1.1 - Branches of anatomy that study the body at...Ch. 1.1 - How comparative physiology advances the...Ch. 1.2 - In what way did the followers of Galen disregard...Ch. 1.2 - Prob. 4BYGOCh. 1.2 - How is our concept of human form and function...Ch. 1.2 - Greek and Roman scholars who first gave medicine a...
Ch. 1.2 - Prob. 2AYLOCh. 1.2 - Why medical science today owes such a great debt...Ch. 1.2 - How Schleiden and Schwann revolutionized and...Ch. 1.3 - Describe the general process involved in the...Ch. 1.3 - Describe some sources of potential bias in...Ch. 1.3 - Is there more information in an individual...Ch. 1.3 - How philosophers Bacon and Descartes...Ch. 1.3 - Prob. 2AYLOCh. 1.3 - Prob. 3AYLOCh. 1.3 - The qualities of a valid scientific hypothesis,...Ch. 1.3 - How each of the following contributes to the...Ch. 1.3 - The distinctions between scientific facts, laws,...Ch. 1.4 - Define adaptation and selection pressure. Why are...Ch. 1.4 - Prob. 10BYGOCh. 1.4 - Select two other human characteristics and explain...Ch. 1.4 - The meanings of evolution, natural selection,...Ch. 1.4 - The historical origin of the theory of natural...Ch. 1.4 - How the kinship among all species is relevant to...Ch. 1.4 - Ecological conditions thought to have selected for...Ch. 1.4 - Prob. 5AYLOCh. 1.5 - Prob. 12BYGOCh. 1.5 - Prob. 13BYGOCh. 1.5 - Why is reductionism a necessary out not sufficient...Ch. 1.5 - Prob. 15BYGOCh. 1.5 - Prob. 1AYLOCh. 1.5 - Prob. 2AYLOCh. 1.5 - Examples of why the anatomy presented in textbooks...Ch. 1.6 - List four Etiological criteria of life and one...Ch. 1.6 - What is meant by dynamic equilibrium? Why would it...Ch. 1.6 - Prob. 18BYGOCh. 1.6 - Explain why positive feedback is more likely than...Ch. 1.6 - Prob. 20BYGOCh. 1.6 - Eight essential qualities that distinguish living...Ch. 1.6 - Prob. 2AYLOCh. 1.6 - Prob. 3AYLOCh. 1.6 - The clinical importance of physiological variation...Ch. 1.6 - Prob. 5AYLOCh. 1.6 - Prob. 6AYLOCh. 1.6 - Prob. 7AYLOCh. 1.6 - The concept of matter and energy flowing down...Ch. 1.7 - Explain why modern anatomical terminology is so...Ch. 1.7 - Distinguish between an eponym and an acronym, and...Ch. 1.7 - Prob. 23BYGOCh. 1.7 - Prob. 24BYGOCh. 1.7 - Prob. 1AYLOCh. 1.7 - How to break biomedical terms into familiar roots,...Ch. 1.7 - Prob. 3AYLOCh. 1.7 - Prob. 4AYLOCh. 1.7 - Why precision in spelling and usage of medical...Ch. 1.8 - A description of six core themes of this book:...Ch. 1 - Prob. 1TYRCh. 1 - Prob. 2TYRCh. 1 - The simplest structures considered to be alive are...Ch. 1 - Which of the following people revolutionized the...Ch. 1 - Which of the following embodies the greatest...Ch. 1 - Prob. 6TYRCh. 1 - A self-amplifying chain of physiological events is...Ch. 1 - Which of the following is not a human organ...Ch. 1 - ______ means studying anatomy by touch. a. Gross...Ch. 1 - The prefix hetero- means a. same. b. different. c....Ch. 1 - Cutting and separating tissues to reveal...Ch. 1 - A difference in chemical concentration between one...Ch. 1 - Prob. 13TYRCh. 1 - Physiological effects of a persons mental state...Ch. 1 - The tendency of the body to maintain stable...Ch. 1 - Blood pH averages 7.4 but fluctuates from 7.35 to...Ch. 1 - Prob. 17TYRCh. 1 - Prob. 18TYRCh. 1 - Prob. 19TYRCh. 1 - Prob. 20TYRCh. 1 - Prob. 1BYMVCh. 1 - Prob. 2BYMVCh. 1 - Prob. 3BYMVCh. 1 - metabolo-Ch. 1 - Prob. 5BYMVCh. 1 - physio-Ch. 1 - Prob. 7BYMVCh. 1 - Prob. 8BYMVCh. 1 - Prob. 9BYMVCh. 1 - tomo-Ch. 1 - Prob. 1WWTSCh. 1 - Prob. 2WWTSCh. 1 - Prob. 3WWTSCh. 1 - Prob. 4WWTSCh. 1 - Matter does not generally move down a gradient in...Ch. 1 - Prob. 6WWTSCh. 1 - Prob. 7WWTSCh. 1 - Prob. 8WWTSCh. 1 - Human evolution is basically a theory that humans...Ch. 1 - Prob. 10WWTSCh. 1 - Ellen is pregnant and tells Janet, one of her...Ch. 1 - Which of the characteristics of living things are...Ch. 1 - About 1 out of every 120 live-born infants has a...Ch. 1 - How might human anatomy be different today if the...Ch. 1 - Prob. 5TYC
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- Physiological changes that occur in anticipation of a future change to a homeostatic variable are called __________ processes.arrow_forwardWhat does negative feedback do? a. It establishes a set point. b. It changes the set point. c. It eliminates the set point. d. It reduces discrepancies from a set point.arrow_forwardIn negative feedback, the variable being regulated is changed in the ______ direction, while in positive feedback the variable is changed in the ______ direction. A. same, opposite B. negative, positive C. opposite, same D. decreasing, increasingarrow_forward
- Which of the following is true of positive feedback? a. The change is opposite that of negative feedback b. The effector turns off the response c. The change is amplified What is the difference between the answers a & b?arrow_forwardWhich of the following terms does The state of internal equilibrium despite external changing conditions belong to? a.)Control center b.)Homeostasis c.)Stimulus-response model d.)Negative feedback e.)Positive feedback f.)Feedback modelarrow_forwardIn describing a positive feedback loop, which of the following would be true? a) the sensor and control center are always the same b) the effector signals the control center to shut off the initial stimulus c) the effect shuts off the initial stimulus d) the effect amplifies the initial stimuarrow_forward
- When you have completed this section, you should be able to a. state the characteristics that distinguish living organisms from nonliving objects;b. explain the importance of physiological variation among persons;c. define homeostasis and explain why this concept is central to physiology;d. define negative feedback, give an example of it, and explain its importance to homeostasis;e. define positive feedback and give examples of its beneficial and harmful effects; andf. define gradient, describe the variety of gradients in human physiology, and identify some forms of matter andenergy that flow down gradients.arrow_forwardIn a negative feedback loop, the effector produces changes that are a. in the same direction as the change produced by the initial stimulus. b. opposite in direction to the change produced by the initial stimulus. c. unrelated to the initial stimulus.arrow_forwardgive two examples of feedback mechanisms in the human body. identify the type of feedback (negative or positive), the receptor, the control center and effector.arrow_forward
- Which of the following physiological event is not maintained by homeostasis? Select one: a. Temperature of the body. b. Blood pressure. c. Concentration of oxygen in the body. d. Concentration of nutrients in the body.arrow_forwardA) Divergent Process B) Positive Feedback Process C) Negative Feedback Process D) Neutral Processarrow_forwardWhich of the following statements best describes homeostasis? a. Keeping the body in a fixed and unaltered state b. Dynamic equilibrium c. Maintaining a near-constant internal environment d. Altering the external environment to accommodate the body's needsarrow_forward
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