Diastole

usgb/daɪˈæstəli/
noun

The cycle when the heart relaxes and fills with blood.

During diastole, the heart chambers relax and fill with blood to prepare for the next contraction.
Visual representation of "diastole" - The cycle when the heart relaxes and fills with blood.

Often appears as...

  • diastolic blood pressure
  • ventricular diastole

Usage tips

Technical

Definition 1 of 1
Visual representation of "diastole"
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Technical Term

Used in medical or biological contexts, not in casual conversation.

Illustration for Technical Term
In our physiology class, we learned how diastole functions in the cardiac cycle.
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Opposite Phase

Helps describe one of the two main heart phases, the other being 'systole'.

Illustration for Opposite Phase
Diastole is when the heart rests, whereas systole is when the heart contracts.
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Blood Pressure

Relevant in discussing blood pressure, as in 'diastolic pressure'.

Illustration for Blood Pressure
The doctor said my diastolic pressure is lower than average.
Visual representation of the word "Diastole"

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