BIOLOGY
5th Edition
ISBN: 9781264104680
Author: BROOKER
Publisher: MCG
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Chapter 41, Problem 8TY
Summary Introduction
Introduction: The concentration of some solutes in the blood like minerals, glucose, and oxygen is not always constant; it changes with the environmental conditions. These variations are known as physiological variables. For example, blood glucose concentration increases just after a meal.
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Which 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.
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 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.
Chapter 41 Solutions
BIOLOGY
Ch. 41.1 - Core Skill: Modeling The goal of this modeling...Ch. 41.1 - Prob. 2CSCh. 41.2 - Prob. 1CCCh. 41.3 - Core Skill: Connections Can negative feedback...Ch. 41.3 - What similar feedforward process might occur in an...Ch. 41.4 - Prob. 1CCCh. 41.4 - Prob. 2CCCh. 41.4 - Prob. 3CCCh. 41.4 - Prob. 4CCCh. 41.4 - What symptoms are sometimes seen in athletes after...
Ch. 41.4 - Prob. 2EQCh. 41.4 - Prob. 3EQCh. 41 - Prob. 1TYCh. 41 - Structures composed of two or more tissue types...Ch. 41 - Prob. 3TYCh. 41 - From an examination of the structure of many...Ch. 41 - Prob. 5TYCh. 41 - The folds, convolutions, or extensions found in...Ch. 41 - Prob. 7TYCh. 41 - Prob. 8TYCh. 41 - Prob. 9TYCh. 41 - Prob. 10TYCh. 41 - Prob. 1CQCh. 41 - Define homeostasis, and give examples of...Ch. 41 - Prob. 3CQCh. 41 - Prob. 1COQCh. 41 - Discuss the organization of animal bodies from the...
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