How is S1 generated?
By the vibration of valves, ventricles, and blood that coincides with:
1. Closure of the atrioventricular (A-V) valves
2. Opening of the semilunar valves. This in turn leads
to two separate sounds, caused by:
Opening of the semilunar valves per se Blood being ejected into the large vessels
In the absence of pathology, only A-V closure is responsible for S1. Semilunar opening is silent.
By the vibration of valves, ventricles, and blood that coincides with:
1. Closure of the atrioventricular (A-V) valves
2. Opening of the semilunar valves. This in turn leads
to two separate sounds, caused by:
Opening of the semilunar valves per se Blood being ejected into the large vessels
In the absence of pathology, only A-V closure is responsible for S1. Semilunar opening is silent.