What is the medical definition for diastole?

What is the medical definition for diastole?

Definition of diastole : a rhythmically recurrent expansion especially : the relaxation and dilation of the chambers of the heart and especially the ventricles during which they fill with blood — compare systole. Other Words from diastole Example Sentences Learn More About diastole.

What are the 4 phases of diastole?

The four components of diastole include (1) isovolumic relaxation period (2) rapid filling (3) slow filling (4) atrial systole. However, factor that influence normal diastolic function also include myocardial relaxation or compliance, elastic recoil, passive ventricular filling, atrial function, and HR [16].

What is a normal ventricular diastole?

That is, for a typical heart rate of 75 beats per minute (bpm), the cycle requires 0.3 sec in ventricular systole (contraction)—pumping blood to all body systems from the two ventricles; and 0.5 sec in diastole (dilation), re-filling the four chambers of the heart, for a total of 0.8 sec to complete the cycle.

What is SYS and DIA?

Here's what the numbers mean: Your systolic pressure (the top number) is the pressure of the blood in your arteries when your heart contracts or beats. Your diastolic pressure (the bottom number) is the pressure of the blood in your arteries between beats, when your heart relaxes.

What is diastole quizlet?

diastole. The stage of the heart cycle in which the heart muscle is relaxed, allowing the chambers to fill with blood. mid-to-late ventricular diastole. Complete relaxation, low pressure, blood flowing passively into ventricles. AV: OPEN SL: CLOSED.

What is systolic and diastolic?

Blood pressure is measured using two numbers: The first number, called systolic blood pressure, measures the pressure in your arteries when your heart beats. The second number, called diastolic blood pressure, measures the pressure in your arteries when your heart rests between beats.

What are the 5 stages of the cardiac cycle?

5 Phases of the Cardiac Cycle

• Atrial Systole.
• Early Ventricular Systole.
• Ventricular Systole.
• Early Ventricular Diastole.
• Late Ventricular Diastole.

What causes ventricular diastole?

Ventricular pressure then declines exponentially during isovolumetric relaxation, when both the aortic and mitral valves are closed. This begins the ventricular diastole. When ventricular pressure declines below left atrial pressure, the mitral valve opens and ventricular filling begins.

What happens during cardiac diastole?

Diastole is when the heart muscle relaxes. When the heart relaxes, the chambers of the heart fill with blood, and a person's blood pressure decreases.