Anatomy & Physiology: The Unity of Form and Function
8th Edition
ISBN: 9781259277726
Author: Kenneth S. Saladin Dr.
Publisher: McGraw-Hill Education
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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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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.
In a negative feedback mechanism,a. the output cancels the input.b. there is a fluctuation above and below the average.c. there is self-regulation.d. a regulatory center communicates with other body parts.e. All of these are correct.
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.
Chapter 1 Solutions
Anatomy & Physiology: The Unity of Form and Function
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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- 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 is incorrect?a. Equilibrium requires a constant input of energy.b. Positive feedback is less common in nature than negative feedback.c. Homeostasis does not imply that a given variable is unchanging.d. Fever is an example of resetting a set point.e. Efferent pathways carry information away from the integrating center of a reflex arc.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_forward
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- Match the body temperature control item to the appropriate location in the negative feedback loop. Effector when variable is low Effector when variable is high Control center Sensor Controlled variable A. Muscles for shivering and goosebumps B. Nerves in skin C. Brain D. Sweat glands E. Temperaturearrow_forwardPositive feedback mechanisms are beneficial, but they need to be controlled. Discuss a scenario where if positive feedback was allowed to continue, the body might get damaged.arrow_forwardWhen you step outside in the cold, your body temperature decreases; which causes shivering or contractions of your muscles. In this example, the shivering or contracting of the muscles, is what part of the feedback loop?arrow_forward
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