Diuresis and Neurotransmitters in Physiology
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Questions and Answers

What effect do bradykinin and histamine have on AVP secretion?

  • Fluctuate it
  • Have no effect on it
  • Increase it
  • Lower it (correct)
  • How does norepinephrine influence AVP secretion?

  • Decreases it (correct)
  • Increases it
  • Causes fluctuations in secretion
  • No effect
  • What happens to the set point of osmolality values with a decrease in blood volume or pressure?

  • Shifts to lower osmolality values (correct)
  • Stays the same
  • Shifts to higher osmolality values
  • Fluctuates randomly
  • In circulatory collapse, what action do the kidneys take with respect to water conservation?

    <p>Continue to conserve water</p> Signup and view all the answers

    What is the condition called when body fluids become hyperosmotic due to water deprivation?

    <p>Central diabetes insipidus</p> Signup and view all the answers

    What is the consequence of inadequate release of AVP from the posterior pituitary?

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

    How does the slope of the relationship between blood volume or pressure and body fluid osmolality change with a decrease in blood volume?

    <p>Becomes steeper</p> Signup and view all the answers

    What is the primary action of AVP on the kidneys?

    <p>Enhance absorption of water</p> Signup and view all the answers

    What happens to body fluids in central diabetes insipidus?

    <p>They become hyperosmotic</p> Signup and view all the answers

    How do alterations in blood volume affect the response to changes in body fluid osmolality?

    <p>Shift the set point to lower osmolality values</p> Signup and view all the answers

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