The coronary circulation supplies oxygenated blood to the myocardium during diastole.
Coronary circulation is the circulation of the blood to the heart muscles by the blood vessels. The coronary arteries are responsible for this supply. The blockage of these arteries can cause Coronary Artery Disease (CAD). Any other obstacle in this circulation can cause heart attack as well.
Diastole is the phase of circulation during which the heart chambers start to get in a relaxed state. The diastole can se ventricular or atrial. The chambers of heart get filled during this stage and the blood pressure decreases. Each cardiac cycle has 0.5 seconds of diastole.
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