Circulatory System Quiz
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Questions and Answers

What is the main function of the nodal system?

  • Extracting oxygen from blood
  • Surrounding the heart in a protective layer
  • Pumping blood to the lungs
  • Conduction of electrical impulses within the heart (correct)

    • Which structure serves as the protective sac surrounding the heart?

  • Epicardium
  • Endocardium
  • Pericardium (correct)
  • Myocardium

    • What is systemic circulation responsible for?

  • Transporting deoxygenated blood to the lungs
  • Pumping blood to all parts of the body (correct)
  • Dissolving blood clots
  • Regulating heart rate

    • What does systolic pressure measure?

    <p>Blood pressure during heart contraction</p> Signup and view all the answers

    What effect does a vasoconstrictor have on blood vessels?

    <p>It constricts blood vessels, increasing blood pressure</p> Signup and view all the answers

    What is the primary function of a vasodilator?

    <p>To stimulate dilation of blood vessels</p> Signup and view all the answers

    Which of the following correctly describes veins?

    <p>They carry oxygen-poor blood to the heart</p> Signup and view all the answers

    What do ventricles do in the circulatory system?

    <p>Pump blood to the lungs and the body</p> Signup and view all the answers

    What structure do the atria represent in the heart?

    <p>Upper chambers that receive blood</p> Signup and view all the answers

    Which statement best describes the function of veins?

    <p>They contain valves to prevent backflow of blood</p> Signup and view all the answers

    What is the primary function of an anticoagulant medication?

    <p>To prevent blood clot formation</p> Signup and view all the answers

    Which of the following describes the role of diuretics?

    <p>They increase urine output</p> Signup and view all the answers

    What part of the heart is referred to as the apex?

    <p>The lowest part of the heart's exterior</p> Signup and view all the answers

    Which blood vessels are responsible for carrying oxygenated blood away from the heart?

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

    What layer of the heart is known as the endocardium?

    <p>The innermost layer lining the chambers</p> Signup and view all the answers

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