HUMAN BIOLOGY W/ACCESS
16th Edition
ISBN: 9781260997231
Author: Mader
Publisher: MCG
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Textbook Question
Chapter 4, Problem 15A
Which of the following allows rapid change in one direction but does not achieve stability?
a. homeostasis
b. positive feedback
c. negative feedback
d. All of these are correct.
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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.
Which of the following allows rapid change in one direction butdoes not achieve stability?a. homeostasisb. positive feedbackc. negative feedbackd. All of these are correct
Which of the following is not true for f negative feedback loops?
A. In a negative loop, the response to the signal or stimulus decreases the original signal or stimulus.
B. Negative feedback loops maintain homeostasis.
C. Negative feedback loops are temporary.
D. There are many more instances of negative feedback loops in the human body than positive feedback loops.
Chapter 4 Solutions
HUMAN BIOLOGY W/ACCESS
Ch. 4.1 - Understand where tissues relate in the biological...Ch. 4.1 - Prob. 2LOCh. 4.1 - Prob. 1CYPCh. 4.1 - Distinguish between muscular tissue and nervous...Ch. 4.1 - Distinguish between connective tissue and...Ch. 4.2 - Prob. 1LOCh. 4.2 - Prob. 2LOCh. 4.2 - Prob. 3LOCh. 4.2 - Describe the three general categories of...Ch. 4.2 - Explain the difference in the composition of the...
Ch. 4.2 - Prob. 3CYPCh. 4.3 - Distinguish among the three types of muscles with...Ch. 4.3 - Explain the difference in the structure and...Ch. 4.3 - Describe where each type of muscle fiber is found...Ch. 4.3 - Explain why smooth muscle and cardiac muscle are...Ch. 4.4 - Prob. 1LOCh. 4.4 - Describe the structure of a neuron.Ch. 4.4 - Prob. 1CYPCh. 4.4 - Prob. 2CYPCh. 4.5 - Prob. 1LOCh. 4.5 - Prob. 2LOCh. 4.5 - Prob. 1CYPCh. 4.5 - Prob. 2CYPCh. 4.5 - Summarize how the structure of some epithelial...Ch. 4.6 - Prob. 1LOCh. 4.6 - Prob. 2LOCh. 4.6 - Prob. 3LOCh. 4.6 - Prob. 1CYPCh. 4.6 - Prob. 2CYPCh. 4.6 - Prob. 3CYPCh. 4.6 - What area of the slain would likely be the hardest...Ch. 4.6 - Prob. 2BTSCh. 4.7 - Summarize the function of each organ system in the...Ch. 4.7 - Prob. 2LOCh. 4.7 - Prob. 3LOCh. 4.7 - Prob. 1CYPCh. 4.7 - Prob. 2CYPCh. 4.7 - Prob. 3CYPCh. 4.8 - Prob. 1LOCh. 4.8 - Prob. 2LOCh. 4.8 - Summarize how the body systems contribute to...Ch. 4 - Prob. 1ACh. 4 - Prob. 2ACh. 4 - Prob. 3ACh. 4 - Prob. 4ACh. 4 - Prob. 5ACh. 4 - Prob. 6ACh. 4 - Prob. 7ACh. 4 - Prob. 8ACh. 4 - Prob. 9ACh. 4 - Prob. 10ACh. 4 - Prob. 11ACh. 4 - 12. Keratinization of epithelial cells occurs in...Ch. 4 - Prob. 13ACh. 4 - Prob. 14ACh. 4 - Which of the following allows rapid change in one...Ch. 4 - Prob. 16ACh. 4 - Prob. 1TCCh. 4 - What accessory structures and tissues are damaged...Ch. 4 - Prob. 3TCCh. 4 - Prob. 4TCCh. 4 - Which structures in the dermis will have the...Ch. 4 - Prob. 6TC
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- 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.arrow_forwardwhich of the following situations illustrates that a homeostatic mechanism is not operating properly? a. acute high blood pressure b. normalized blood glucose levels c. dailt fluid intake equals dailty fluid output d. all of these illustrate homestatic mechanisms operating properlyarrow_forwardWhich 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_forward
- a positive-feedback system is one in which a. a variable is charged in the opposite direction to the original change that initiated the system b. a variable is changed in the same direction as the original change that initiated the system c. two opposiding variables are played against each other d. the initiating variable is always increasedarrow_forwardMark the following statements as true or false. If a statement is false, correct it to make a true statement. a. Structure and function are closely related at the organ level only. b. Homeostasis is the condition of having a dynamic equilibrium of the internal environment. c. Positive feedback loops are triggered by a deviation from a homeostatic set point and are shut down when conditions return to the set point. d. The effects of negative feedback loops are amplified to create an escalating response. e. Cell-cell communication is required to coordinate the activities of the whole bodyarrow_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
- In negative feedback,a. a change causes responses that counteract the change.b. a response to a change damages the body.c. a change produces a response that enhances the change.d. a response to a change permanently alters the body.arrow_forwardMatch 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_forwardSweating is an example of variable. It is also an example of negative feedback mechanism. a. Both statements are true b. Both statements are false c. First is true, Second is false d. First is false, Second is truearrow_forward
- 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.arrow_forwardwhich of the following scenarios can be classified as a negative feedback loop? a. increase in oxytocin caused by increased contractions b. increase in blood pressure to reduce heart rate c. increase in testosterone to help increase a fight or flight response d. increase in platelet production to help increase blood clottingarrow_forwardHomeostasis a. is a dynamic process. b. describes the maintenance of the internal environment of the body. c. is essential to life. d. All of the choices are correct.arrow_forward
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