10 Questions
When does the first heart sound (S1) occur?
Closure of mitral valve and tricuspid valve
Which area is the second heart sound (S2) loudest at?
Base
What happens when the ventricle contracts regarding heart sounds?
Mitral valve closes to prevent backflow
What is happening when we hear the second heart sound through auscultation?
Semilunar valve closes to prevent backflow
Where should the stethoscope usually be placed to hear the first heart sound easily?
Apex
Where is the murmur of ventricular septal defect (VSD) usually best heard?
Tricuspid area
Which condition is characterized by blood flow through a valve that is normally closed during systole?
Regurgitation
In which high-flow state can an increased blood flow through a normal valve commonly be observed?
Pregnancy
Which heart defect involves an abnormal opening in the wall between the two ventricles?
Right ventricle
Where does the murmur of ventricular septal defect (VSD) typically radiate to?
Right lower sternal border
Learn about the characteristics of the first heart sound (S1) and second heart sound (S2). Understand the closure of valves, timing in the cardiac cycle, and locations where these sounds are loudest. Practice identifying S1 and S2 with a stethoscope.
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