'If you listen to your heart using a stethoscope, you'll hear the sound of these flaps opening & closing'
valves
SOUNDS ALL AROUND: If you listen to your heart using a stethoscope, youll hear the sound of these flaps opening & closing
If you listen to your heart using a stethoscope, you'll hear the sound of these flaps opening & closing
If you listen to your heart using a stethoscope, you'll hear the sound of these flaps opening & closing
SOUNDS ALL AROUND
valves
SOUNDS ALL AROUND