APPLIED RADIOLOGICAL ANATOMY

Detailed explanation-1: -This period encompasses the ventricular relaxation and filling. Diastole represents when the blood vessels return blood to the heart in preparation for the next ventricular contraction.

Detailed explanation-2: -Every time a healthy heart pumps oxygen-rich blood from the lungs into the rest of the body, it goes through two phases-a contracting or pumping phase (called systolic function) and a relaxing phase (called diastolic function).

Detailed explanation-3: -The cardiac cycle is essentially split into two phases, systole (the contraction phase) and diastole (the relaxation phase).

Detailed explanation-4: -Cardiac muscle relaxation is an essential step in the cardiac cycle. Even when the contraction of the heart is normal and forceful, a relaxation phase that is too slow will limit proper filling of the ventricles. Relaxation is too often thought of as a mere passive process that follows contraction.