diastole etymology

Etymology:

• From Greek "diastolē" (διαστολή), meaning "extension, dilation".

Meaning:

• In physiology, diastole refers to the period of relaxation in the cardiac cycle, during which the heart's chambers fill with blood.

Origin:

• The term "diastole" was first used in the 1600s by the English physician William Harvey, who described it as the phase of the heart in which the "auricle [atrium] expands" and receives blood from the veins.

Usage:

• In modern physiology, diastole is the phase of the cardiac cycle that occurs between systole (contraction of the heart's chambers) and the opening of the aortic and pulmonary valves, allowing blood to enter the ventricles.
• The duration of diastole is typically longer than systole, allowing the heart to adequately fill with blood and prepare for the next contraction.
• Disturbances in diastole, such as impaired relaxation of the heart muscle, can lead to heart failure and other cardiovascular conditions.

diastole relate terms

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