Here is the answer for the question – What makes the first heart sound “Lubb” S1?. You’ll find the correct answer below
What makes the first heart sound “Lubb” S1?
The Correct Answer is
The snapping shut of the AV valves (tricuspid and mitral)
Reason Explained
The snapping shut of the AV valves (tricuspid and mitral) is correct for What makes the first heart sound “Lubb” S1?
