What is ventricular diastole?

Diastole, in the cardiac cycle, period of relaxation of the heart muscle, accompanied by the filling of the chambers with blood. Ventricular diastole again occurs after the blood has been ejected (during ventricular systole) into the aorta and pulmonary artery.

What is occurring during ventricular diastole?

Ventricular diastole is the period during which the two ventricles are relaxing from the contortions/wringing of contraction, then dilating and filling; atrial diastole is the period during which the two atria likewise are relaxing under suction, dilating, and filling.

What phase is ventricular diastole?

Diastole is defined as the period between aortic valve closure and mitral valve closure (diastole is considered to start with the onset of relaxation of ventricular muscle contraction just proceeding the closure of the aortic valve), which consists of four phases: isovolumic relaxation, rapid filling, diastasis, and …

Where is systole and diastole on ECG?

In an electrocardiogram (ECG, or EKG), the beginning of ventricular systole is marked by the deflections of the QRS complex. Atrial systole occurs toward the end of ventricular diastole, completing the filling of the ventricles.

What happens during ventricular diastole?

Ventricular diastole is the period during which the two ventricles are relaxing from the contortions/wringing of contraction, then dilating and filling; atrial diastole is the period during which the two atria likewise are relaxing under suction, dilating, and filling.

Which event occurs during ventricular systole?

Systole, period of contraction of the ventricles of the heart that occurs between the first and second heart sounds of the cardiac cycle (the sequence of events in a single heart beat). Systole causes the ejection of blood into the aorta and pulmonary trunk.

Is diastolic or systolic more dangerous?

Whether diastolic or systolic is more dangerous is dependent upon age. As a youth, diastolic is more important to use as a sign of risk for hypertension as youths have lower levels of systolic pressure. As people age, systolic pressure increases, while diastolic decreases making systolic readings more useful as a sign of risk for hypertension.

What is the phase of the cardiac cycle?

CARDIAC CYCLE. The cardiac cycle is the sequence of events that occurs when the heart beats. There are two phases of the cardiac cycle; diastole and systole. In the diastole phase, the heart ventricles are relaxed and the heart fills with blood. In the systole phase, the ventricles contract and pump blood to the arteries.