1. Why do systole and diastole typically refer to what is happening in the ventricles?

The terms diastole and systole refer to when the heart muscles relax and contract. The balance between diastole and systole determines a person’s blood pressure.

The heart is a pump that supplies all tissues and organs of the body with oxygen-rich blood. The heartbeat is caused by the heart muscles relaxing and contracting.

During this cycle, the period of relaxation is called diastole and the period of contraction is called systole.

Explanation:

well when looking at this if you think about it   negativley and positivley   react with each other and when the first layer gets full they add layers it starts with 2 on the first layer and it constantly goes on until the official number is there

ground wouldnt be clean and the soap wouldnt be dirty