Circulatory System Quiz
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Questions and Answers

What is the function of the coronary artery?

  • To facilitate gas exchange in the pulmonary circulation
  • To nourish the heart with oxygen-rich blood (correct)
  • To deliver blood to organs
  • To provide the heart with an automatic rhythmic beat

Where is the primary pacemaker of the heart located?

  • Junction of SVC and RA (correct)
  • Interatrial septum
  • Interventricular septum
  • Walls of the ventricles

What is the role of the AV node in the heart's conduction system?

  • To stimulate the heart to contract and pump blood
  • To divide into R and L main bundle branches
  • To delay the electrical impulse to allow ventricular filling (correct)
  • To provide the heart with an automatic rhythmic beat

What happens at the interventricular septum?

<p>It divides into R and L main bundle branches (A)</p> Signup and view all the answers

What triggers myocardial contraction in the heart?

<p>Changes in voltage across the cell membrane (C)</p> Signup and view all the answers

What is the function of the SA node in the heart's conduction system?

<p>Serve as the primary pacemaker of the heart (A)</p> Signup and view all the answers

What is the role of the AV node in the heart's conduction system?

<p>Delay the electrical impulse to allow ventricular filling (D)</p> Signup and view all the answers

What occurs in the pulmonary circulation?

<p>Gas exchange (D)</p> Signup and view all the answers

What is the function of the coronary artery?

<p>Nourish the heart with oxygen-rich blood (C)</p> Signup and view all the answers

Where are the Purkinje fibers located in the heart?

<p>Walls of the ventricles (D)</p> Signup and view all the answers

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