Cardiovascular Physiology Readings Quiz
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Questions and Answers

What is the main function of desmosomes and gap junctions in the heart?

  • To support lung function
  • To regulate body temperature
  • To regulate blood flow
  • To physically and electrically coordinate heart function (correct)
  • Which cellular structures in myocytes support contraction?

  • Calcium ions and potassium ions
  • Lipids and proteins
  • Desmosomes and gap junctions
  • Actin and myosin filaments (correct)
  • Which chapter in the 16th edition of Vander’s Human Physiology discusses blood flow?

  • Chapter 15
  • Chapter 12 (correct)
  • Chapter 9
  • Chapter 8
  • What is the main focus of Chapter 12 in the 15th edition of Vander’s Human Physiology?

    <p>Blood flow</p> Signup and view all the answers

    What is the purpose of arterioles in the cardiovascular system?

    <p>To regulate blood flow to capillaries</p> Signup and view all the answers

    Which chapter in Costanzo's Physiology 7th Edition focuses on Cardiovascular Physiology?

    <p>Chapter 4</p> Signup and view all the answers

    What is the term for many cells working as one in cardiac myocytes?

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

    What is the term for the process of muscle contraction involving Ca2+-induced Ca2+ release?

    <p>Excitation-contraction coupling (e-cc)</p> Signup and view all the answers

    Which ion current is responsible for the plateau phase of the cardiac action potential?

    <p>Calcium current</p> Signup and view all the answers

    What is the term for the unstable resting membrane potential in nodal cells?

    <p>Autorhythmic potential</p> Signup and view all the answers

    Which cellular structures support contraction in myocytes?

    <p>Actin and myosin filaments</p> Signup and view all the answers

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