Assertion: atrial systole | /r/CapableOf | apply contraction pressure
Facets:
value: at this point
type: TEMPORAL
Source sentences:
text: At this point, the atrial systole applies contraction pressure to 'topping-off' the blood volumes sent to both ventricles; this atrial kick closes the diastole immediately before the heart again begins contracting and ejecting blood from the ventricles (ventricular systole) to the aorta and arteries.