Baroreceptors and Control of Arterial Pressure Quiz
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Questions and Answers

What is the main function of baroreceptors in the body?

  • Regulating oxygen concentration in the tissues
  • Controlling sodium levels in the extracellular fluid
  • Regulating glucose concentration in the blood
  • Sending signals to the medulla of the brain to regulate arterial pressure (correct)
  • Which organ controls the concentration of carbon dioxide in the extracellular fluid?

  • Heart
  • Pancreas
  • Kidneys (correct)
  • Liver
  • What is the role of the vasomotor center in the body's control system?

  • Regulating glucose metabolism
  • Controlling pH balance in the blood
  • Maintaining sodium-potassium balance
  • Regulating the dilation of blood vessels and returning arterial pressure towards normal (correct)
  • How do baroreceptors respond when arterial pressure increases above normal?

    <p>Generate an error signal to adjust carbon dioxide concentration</p> Signup and view all the answers

    What is the function of the liver in relation to the extracellular fluid?

    <p>Regulating acid-base balance in the body</p> Signup and view all the answers

    In the body's control system, what is the purpose of regulating sodium, potassium, and phosphate ions in the extracellular fluid?

    <p>Maintaining acid-base balance in the body</p> Signup and view all the answers

    Which mechanism helps regulate arterial pressure by responding to changes in blood pressure?

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

    If a person's baroreceptors are not functioning properly, what would be the effect on arterial pressure?

    <p>Increase in arterial pressure</p> Signup and view all the answers

    What is the role of the vasomotor center in the control system of arterial pressure?

    <p>Controlling blood vessel constriction and dilation</p> Signup and view all the answers

    Which factor triggers a series of reactions that promote an increase in arterial pressure?

    <p>Malfunctioning baroreceptors</p> Signup and view all the answers

    How does the control system respond to a high arterial pressure above the normal level?

    <p>By initiating a series of reactions to lower the pressure</p> Signup and view all the answers

    What is the primary function of baroreceptors in the regulation of arterial pressure?

    <p>Sensing changes in blood pressure</p> Signup and view all the answers

    What is the role of the liver in the body?

    <p>Eliminating waste products and toxic substances</p> Signup and view all the answers

    Where are the vasomotor centers that control internal blood pressure located?

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

    Which system is an example of a rapidly acting control mechanism for arterial blood pressure regulation?

    <p>Baroreceptor system</p> Signup and view all the answers

    What does the baroreceptor system respond to in terms of maintaining homeostasis?

    <p>Carbon dioxide concentration</p> Signup and view all the answers

    What happens when the error persists in the baroreceptor system?

    <p>Sympathetic nervous system activity increases</p> Signup and view all the answers

    Which part of the brain plays a crucial role in comparing input signals for arterial blood pressure regulation?

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

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