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What (who) is diastole - definition
PART OF THE CARDIAC CYCLE WHEN THE HEART REFILLS WITH BLOOD FOLLOWING SYSTOLE (CONTRACTION)
Diastolic; Filling veolcity; Diastolic filling velocity; Ventricular filling; Ventricular filling velocity; Distole; Diastolic phase; Ventricular relaxation period
![atrioventricular (mitral and tricuspid) valves]] open, causing blood volume (red trace) in the atria to flow into the ventricles. In ''late ventricular diastole'', the two atrial chambers begin to contract ([[atrial systole]]), causing blood pressure in both atria to increase and forcing additional blood volume into the ventricles. This beginning of the atrial systole is known as the atrial kick—see "Ventricular volume" trace (red) directly above the P-wave in the electrocardiogram trace (dark-blue).](https://commons.wikimedia.org/wiki/Special:FilePath/Wiggers Diagram.svg?width=200 "atrioventricular (mitral and tricuspid) valves]] open, causing blood volume (red trace) in the atria to flow into the ventricles. In ''late ventricular diastole'', the two atrial chambers begin to contract ([[atrial systole]]), causing blood pressure in both atria to increase and forcing additional blood volume into the ventricles. This beginning of the atrial systole is known as the atrial kick—see \"Ventricular volume\" trace (red) directly above the P-wave in the electrocardiogram trace (dark-blue).")
Diastole
·noun A figure by which a syllable naturally short is made long.
II. Diastole ·noun The rhythmical expansion or dilatation of the heart and arteries;
- correlative to systole, or contraction.
diastole
[d??'ast?li]
¦ noun Physiology the phase of the heartbeat when the heart muscle relaxes and allows the chambers to fill with blood. Often contrasted with systole.
Derivatives
diastolic adjective
Origin
C16: via late L. from Gk, 'separation, expansion'.
diastole
n.
Dilatation, outward throb.
Wikipedia
Diastole
Diastole ( dy-AST-ə-lee) is the relaxed phase of the cardiac cycle when the chambers of the heart are re-filling with blood. The contrasting phase is systole when the heart chambers are contracting. Atrial diastole is the relaxing of the atria, and ventricular diastole the relaxing of the ventricles.
The term originates from the Greek word διαστολή (diastolē), meaning "dilation", from διά (diá, "apart") + στέλλειν (stéllein, "to send").
