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?
- Pulmonary arteries
- Coronary arteries
- Renal arteries
- Carotid arteries
Q2. What structure electrically connects the atria to the ventricles?
- Chordae tendineae
- Aortic valve
- SA node
- Atrioventricular (AV) node
Q3. What is the function of the chordae tendineae?
- Control heart rhythm
- Prevent valve prolapse during contraction
- Initiate depolarization
- Transport blood
Q4. Which valve prevents backflow of blood into the left ventricle?
- Mitral valve
- Aortic valve
- Pulmonary valve
- Tricuspid valve
Q5. Which heart sound corresponds to closure of the AV valves?
- S3
- S2
- S4
- S1 (first heart sound)
Q6. Where are the Purkinje fibers located?
- Subendocardial layer of ventricles
- Coronary sinus
- Pericardium
- Atrial wall
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?
- Refractory phase
- Systole
- Depolarization
- Diastole
Q9. Where is the AV node located anatomically?
- Left ventricular wall
- Apex of the heart
- Base of the aorta
- Interatrial septum near coronary sinus
Q10. What is the function of the pericardial sac?
- Stimulates pacemaker activity
- Stores blood for circulation
- Reduces friction during heartbeats
- Forms heart valves