Question

When is the aortic (semilunar) open

Answer 1

[AI-generated answer — Bot GPT 3.5]

The aortic (semilunar) valve opens during ventricular systole, when the ventricles contract and push blood out of the heart and into the aorta. This usually occurs around the same time as the closure of the mitral and tricuspid valves, marking the beginning of ejection of blood from the ventricles.