systoles

Cardiac pumping phases

Systoles is the plural of systole, the phase of the heartbeat when the heart muscle contracts and pumps blood into the arteries.

It alternates with diastole, the relaxation phase.

Blood pressure readings give systolic pressure first: His systoles were running high, pushing 150.

The term extends to any rhythmic contraction.

cardiac

ventricular

Of heart's lower chambers

atrium · myocardium · endocardium · pericardium · aorta · valves · pacemaker · depolarization · repolarization · chamber

rhythm

beat

Rhythmic pulse or strike

tempo · pulse · regularity · cycle · periodicity · timing · pattern · sequence · oscillation · recurrence

contraction

squeeze

Firm bilateral compression

constrict · shorten · muscle · clench · twitch · spasm · flex · narrow · forceful · expulsion

circulation

pressure

Force upon contact

circulation · perfusion · flow · vascular · capillary

Opposites
cardiac cycle phase

systolesdiastoles

Heart's resting phases

diastole

Phrases
Family

systole, systolic, asystole

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