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 (C)</p> Signup and view all the answers

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

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

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

<p>Variables (B)</p> Signup and view all the answers

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

<p>Set point (D)</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 (B)</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 (C)</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 (D)</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 (A)</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 (A)</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 (B)</p> Signup and view all the answers

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

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

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

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

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

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

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

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

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