Intermediate Heart Quiz

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This quiz contains 10 questions. Click below to begin.

Q1. Which artery supplies blood to the heart muscle itself?

  • Renal arteries
  • Coronary arteries
  • Carotid arteries
  • Pulmonary arteries

Q2. What structure electrically connects the atria to the ventricles?

  • Atrioventricular (AV) node
  • Aortic valve
  • Chordae tendineae
  • SA node

Q3. What is the function of the chordae tendineae?

  • Control heart rhythm
  • Prevent valve prolapse during contraction
  • Transport blood
  • Initiate depolarization

Q4. Which valve prevents backflow of blood into the left ventricle?

  • Aortic valve
  • Pulmonary valve
  • Mitral valve
  • Tricuspid valve

Q5. Which heart sound corresponds to closure of the AV valves?

  • S2
  • S1 (first heart sound)
  • S4
  • S3

Q6. Where are the Purkinje fibers located?

  • Pericardium
  • Atrial wall
  • Coronary sinus
  • Subendocardial layer of ventricles

Q7. Which structure lies between the left atrium and the left ventricle?

  • Tricuspid valve
  • Pulmonary valve
  • Mitral valve
  • Aortic valve

Q8. Which phase of the cardiac cycle is associated with ventricular filling?

  • Diastole
  • Refractory phase
  • Systole
  • Depolarization

Q9. Where is the AV node located anatomically?

  • Apex of the heart
  • Left ventricular wall
  • Interatrial septum near coronary sinus
  • Base of the aorta

Q10. What is the function of the pericardial sac?

  • Reduces friction during heartbeats
  • Forms heart valves
  • Stores blood for circulation
  • Stimulates pacemaker activity
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