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:

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relationship between pressure and air volume and led to the understanding of how respiration works; i believe this is the correct answer ; /// good luck