Biological Science
5th Edition
ISBN: 9780321743671
Author: Scott Freeman
Publisher: PEARSON
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Chapter 42, Problem 4TYK
Which of the following best describes the set point in a homeostatic system?
a. the cells that collect and transmit information about the state of the system
b. the cells that receive information about the state of the system and that direct changes to the system
c. the various components that produce appropriate changes in the system
d. the target or “normal" value of the parameter in question
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Students have asked these similar questions
Discuss the causes, signs and symptoms of three major homeostatic imbalances under each of the following systems:
a.nervous system
b.endocrine system
c.reproductive system
Which of the following statements describe a characteristic of the human body?
a. Under certain conditions your body’s resistance can be low as a few hundred ohms.
b. The lower the resistance of your body, the more current that can be forced through it by a given amount of voltage.
c. The resistance of your body is lower than the normal when you are wet.
d. All of the above.
EXPLAIN
Homeostasis involves maintaining
Select one:
a. body conditions outside the normal range
b. a relatively constant internal environment in the body
c. the external environment to accommodate the body's needs
d. the body in a fixed, unchanging state
Chapter 42 Solutions
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- 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_forwardWrite a long response that thoroughly explores examples of structure and function working together at the following levels in the interest of maintaining homeostasis: A – Organ B – Organ System C – Organism Be specific at each level of organization while keeping the greater good of the whole body in mind. If there was significant dysfunction at the organ level, predict how the effects of that flaw might ripple though higher levels of organization mentioned above? How might this affect the overall health of the person?arrow_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_forward
- 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.arrow_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_forwardwhich of the following statements are true about homeostasis? Select all that apply. a. The selective permeability of the cell membrane allows for thermoregulation. b. Homeostasis is an organism‘s way of maintaining constant and balanced internal processes. c. Ectotherms rely on environmental heat to maintain homeostasis. d. Homeostasis works by a system of positive feedback.arrow_forward
- Which of the following statement(s) about homeostasis is incorrect? a. it is a dynamic state of equilibriumb. despite continuous external changes, it maintains a relatively stable internal environmentc. controlled by nervous and endocrine systems via nerve impulses and hormones, respectivelyd. all of the abovee. none of the abovearrow_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_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_forward
- Homeostasis is best described as a. Every deviation in the value of a physiological parameter is corrected by negative feedback regulation b. The body's internal environment is constantly changing The tendency of organisms to maintain a relatively constant internal environment d. The product of a chemical reaction negatively feeds back to inhibit its own production e. Physiological parameters do not changearrow_forwardHomeostasis maintains the body’s internal conditions within a narrow range.a. Trueb. Falsearrow_forwardWhich 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.arrow_forward
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What is Homeostasis? | Physiology | Biology | FuseSchool; Author: FuseSchool - Global Education;https://www.youtube.com/watch?v=quQr6X1Q58I;License: CC-BY