Homeostasis and Set Point Quiz
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Questions and Answers

What term refers to an organism's ability to sense changes in the external or internal environment and adjust to those changes?

  • Responsiveness (correct)
  • Differentiation
  • Development
  • Reproduction
  • Which process involves changes in a cell's structure and function from an immature, generalized state to a mature, specialized state?

  • Growth
  • Reproduction
  • Differentiation (correct)
  • Homeostasis
  • What is the formation of new cells or new organisms called?

  • Responsiveness
  • Reproduction (correct)
  • Development
  • Growth
  • Which term describes the maintenance of a relatively constant environment within the body despite fluctuations in the external or internal environment?

    <p>Homeostasis</p> Signup and view all the answers

    What is the average body temperature that is mentioned in the text?

    <p>$98.6$</p> Signup and view all the answers

    What are the measures of body properties that may change in value called?

    <p>Variables</p> Signup and view all the answers

    Which term describes the normal or average value of a variable in the body?

    <p>Set point</p> Signup and view all the answers

    What does it mean when a system is regulated by negative-feedback mechanisms?

    <p>Deviations from the set point are resisted or reduced</p> Signup and view all the answers

    Which of the following is NOT an example of a variable that can have its set point adjusted depending on body activities?

    <p>Brain size</p> Signup and view all the answers

    What happens to body temperature in relation to the set point during normal regulation?

    <p>It increases and decreases slightly around the set point</p> Signup and view all the answers

    How do organ systems contribute to maintaining homeostasis in the body?

    <p>By helping keep the internal environment relatively constant</p> Signup and view all the answers

    Which process results in deviations from the set point becoming smaller in negative-feedback mechanisms?

    <p>Negative feedback</p> Signup and view all the answers

    What is the main purpose of a negative feedback response in the human organism?

    <p>To correct the deviation toward the set point and normal range</p> Signup and view all the answers

    Which component of a negative feedback mechanism establishes the set point?

    <p>Control center</p> Signup and view all the answers

    In homeostatic mechanisms, what can happen if negative-feedback mechanisms fail?

    <p>Positive-feedback mechanisms take over</p> Signup and view all the answers

    What does a positive feedback mechanism do in response to the original stimulus in the human organism?

    <p>Results in an even greater deviation from the set point</p> Signup and view all the answers

    Which type of response is sometimes required to return to homeostasis?

    <p>Positive feedback response</p> Signup and view all the answers

    What can be detrimental instead of helpful regarding positive-feedback mechanisms?

    <p>Increasing disease states</p> Signup and view all the answers

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