Physiology Chapter 10: Homeostasis and Feedback Regulation
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Questions and Answers

What is the concept that explains how a system maintains internal stability while adjusting to changing external conditions?

  • Homeostasis (correct)
  • Negative Feedback
  • Cybernetics
  • Physiological Regulation
  • Who formulated the concept of homeostasis and applied control theory to explain how a constant internal environment is achieved?

  • Modern Biologist
  • Walter Cannon (correct)
  • Claude Bernard
  • Greek Philosopher
  • What is the primary goal of homeostasis in a living organism?

  • To maintain internal stability (correct)
  • To ensure the perpetuation of genes
  • To promote evolutionary adaptation
  • To regulate gene expression
  • What is the term used to describe the balance between the body humors in ancient Greek medicine?

    <p>Balance of Humors</p> Signup and view all the answers

    What is the name of the French physiologist who introduced the concept of 'milieu intérieur'?

    <p>Claude Bernard</p> Signup and view all the answers

    What is the term used to describe the application of control systems to explain how a constant internal environment is achieved?

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

    What is the primary purpose of negative feedback in homeostasis?

    <p>To maintain a stable range of values in the internal environment</p> Signup and view all the answers

    What is the characteristic of a feedback system?

    <p>It is a closed-loop structure</p> Signup and view all the answers

    What is the main difference between negative and positive feedback systems?

    <p>One seeks a goal, while the other produces growth processes</p> Signup and view all the answers

    What is the purpose of physiological investigations?

    <p>To understand the organism as a single functional entity</p> Signup and view all the answers

    What is the quotation 'Nam deteriores omnes sumus licentiate' trying to convey?

    <p>The importance of control in an organism</p> Signup and view all the answers

    What is the term for the ability of an organism to maintain a stable internal environment?

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

    What is the primary function of negative feedback regulation in maintaining blood pressure?

    <p>To buffer against transitory changes and maintain a stable blood pressure</p> Signup and view all the answers

    What is the limitation of the simple negative feedback schema described in the preceding paragraph?

    <p>It cannot convey the complexity of the homeostatic process</p> Signup and view all the answers

    What happens to the operating point of the negative feedback regulation in response to changing environmental conditions?

    <p>It is adjusted or overridden by higher levels of control</p> Signup and view all the answers

    What is the term for the hierarchical control system that allows an organism to adapt to changing environmental conditions?

    <p>Multi-level multi-goal seeking system</p> Signup and view all the answers

    According to Figure 10.7, what is the first level of the hierarchical control system?

    <p>Physiochemical processes and organ functions</p> Signup and view all the answers

    What is the result of the hierarchical control system in terms of adaptation to changing environmental conditions?

    <p>A finer level of control and greater flexibility</p> Signup and view all the answers

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