Diastole is the part of the cardiac cycle during which the heart refills with blood after the emptying is done during systole.

What does diastole mean in the heart?

Diastole — this period of time when your heart relaxes between beats — is also the time that your coronary artery is able to supply blood to your heart.

What is the meaning of diastolic blood pressure?

The diastolic reading, or the bottom number, is the pressure in the arteries when the heart rests between beats. This is the time when the heart fills with blood and gets oxygen.