Human Physiology: The Cardiovascular System Quiz 1
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Questions and Answers

What causes the first heart sound?

  • Rapid ventricular filling
  • Opening of AV valves (correct)
  • Closing of Aortic & Pulmonic valves
  • Atrial contraction
  • What is the cause of a swishing sound in the heart due to valvular disease?

  • Whistle sound due to regurgitation
  • Stiff and narrowed valves (correct)
  • Turbulent blood flow causing a murmur
  • Insufficient valve closure
  • When does a murmur throughout diastole indicate stenotic tricuspid or mitral valve?

  • During ventricular systole
  • At the beginning of isovolumic relaxation
  • Throughout diastole (correct)
  • During atrial contraction
  • Which term refers to the thick, membranous sac that surrounds the heart?

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

    What is the term for the specialized cardiac muscle cells of the heart?

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

    Which layer of the serous pericardium surrounds the heart as the innermost layer?

    <p>Visceral layer (Epicardium)</p> Signup and view all the answers

    What can occur if the coronary arteries supplying blood to the myocardium are occluded by atherosclerosis and/or thrombosis?

    <p>Angina pectoris or myocardial infarction</p> Signup and view all the answers

    Which part of the heart is responsible for pumping blood through the blood vessels by repeated, rhythmic contractions?

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

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