Question

What happens during S1 sound? During S2 sound?

Answer 1

S1 is the sound created by the closing of the atrioventricular valves during ventricular contraction and is described as a "lub." S2 is the sound of the closing of the semilunar valves during ventricular diastole and is described as a "dub."

Step-by-step explanation:

In a normal, healthy heart, there are two audible heart sounds: S1 and S2. S1 is the sound created by the closing of the atrioventricular valves during ventricular contraction and is described as a "lub." S2 is the sound of the closing of the semilunar valves during ventricular diastole and is described as a "dub."