Advanced Heart Valves Quiz
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This quiz contains 10 questions. Click below to begin.
Q1. Which aortic sinuses normally give rise to the coronary arteries?
- All three sinuses equally
- Pulmonary sinuses
- Right and left aortic sinuses
- Posterior sinus only
Q2. Which aortic sinus normally has no coronary artery origin?
- Posterior noncoronary sinus
- Right aortic sinus
- Left aortic sinus
- Anterior pulmonary sinus
Q3. What are the small central thickenings of semilunar cusps called?
- Papillary muscles
- Nodules
- Trabeculae
- Pectinate ridges
Q4. What are the thin lateral margins of semilunar cusps called?
- Chordae
- Commissures
- Lunules
- Trabeculae
Q5. Which valve lies between the left atrioventricular orifice and aortic outflow tract?
- Tricuspid valve
- Mitral valve
- Pulmonary valve
- Eustachian valve
Q6. Which heart sound is produced mainly by closure of the atrioventricular valves?
- Second heart sound
- First heart sound
- Third heart sound
- Fourth heart sound
Q7. Which heart sound is produced mainly by closure of the semilunar valves?
- First heart sound
- Second heart sound
- Third heart sound
- Fourth heart sound
Q8. Why do semilunar valves not require papillary muscles?
- They remain permanently open
- They contain pectinate muscles
- Their cusps close by pressure-driven filling
- They are attached to atrial muscle
Q9. What prevents AV valve cusps from everting into the atria during systole?
- Interatrial septum
- Semilunar sinuses
- Pectinate muscles
- Papillary muscles and chordae tendineae
Q10. Which statement best describes normal cardiac valve function?
- Valves open and close according to pressure gradients
- Valves actively contract to propel blood
- Valves are opened directly by cardiac nerves
- All valves use papillary muscles to open