Understanding Cardiac Reserve and Cardiac Output

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Questions and Answers

What is preload?

  • The state of increased cardiac contractility
  • The force that the contracting heart must generate to eject blood from the filled heart
  • The volume of blood stretching the resting heart muscle (correct)
  • The mechanical performance of the heart

What does afterload represent?

  • The state of increased cardiac contractility
  • The volume of blood stretching the resting heart muscle
  • The mechanical performance of the heart
  • The force that the contracting heart must generate to eject blood from the filled heart (correct)

What is cardiac contractility?

  • The mechanical performance of the heart (correct)
  • The force that the contracting heart must generate to eject blood from the filled heart
  • The state of increased cardiac contractility
  • The volume of blood stretching the resting heart muscle

What are the main components of afterload?

<p>Ventricular wall tension and peripheral vascular resistance (D)</p> Signup and view all the answers

What determines preload?

<p>Venous return to the heart (B)</p> Signup and view all the answers

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