The Third Heart Sound Can Be Heard ________

Question

The third heart sound can be heard ________.
A) contraction of the atria
B) when the semilunar valves close
C) when the AV valves close
D) when blood flows into the ventricles

Accepted Answer

The third heart sound is associated with the rapid filling phase of the ventricles, which occurs when blood flows into the ventricles from the atria. This sound is often described as a "ventricular gallop."