What Is End-Diastolic Volume?

Periods and states of relaxation and expansion of rhythmic contractile organs such as the heart and contractile cells

Diastole

Right!

Periods and states of relaxation and expansion of rhythmic contractile organs such as the heart and contractile cells

Chinese name

Diastole

Foreign name

diastole

Meaning

Periods and states of relaxation and expansion of rhythmic contractile organs such as the heart and contractile cells

Function

At the end of the filling phase, the atria contract, and then the ventricles contract. After the isovolumic diastole, the ventricle and atrium are at rest. This period is the rest period.

Diastole, relaxation phase

It refers to the period and state in which the heart and contractile cells repeatedly relax or expand the rhythmic contractile organs. The heart of vertebrates can be divided into atrial diastole and ventricular diastole. The latter is generally referred to as the latter. The diastolic phase of the mammalian ventricle can be divided into the following two phases. That is, from the end of the systole (systole) to the opening of the atrioventricular valve after the half-month valve is closed (the person is 0.1 seconds), the blood does not enter the ventricle and the ventricle maintains a certain volume. During this period, the intraventricular pressure drops sharply. This period This is called the period of distension. Subsequently, the intraventricular pressure is lower than the intraatrial pressure, the atrioventricular valve is opened, blood flows into the ventricle, and the ventricular volume increases sharply, but the internal pressure does not change significantly. The period from this period to the beginning of the next ventricular systole is called the period of influx (0.3 seconds for people). At the end of the filling period, the atria contract, and thereafter the ventricles contract. After the isovolumic diastole, the ventricle and atrium are at rest. This period is the rest period. In addition, the cardiac arrest can occur in the diastolic state (for example, the heart of a vertebrate, due to the action of K +, etc.), and can also occur in the contracted state (because of the action of Ca ++, etc.). Systolic arrest.