Assertion: heart valve | /r/CapableOf | allow blood
Facets:
value: from the left atrium
type: LOCATION
Source sentences:
text: When open, it allows blood from the right atrium to flow into the right ventricle.
text: When closed, it allows blood from the left atrium to fill the left ventricle and prevents the back flow of blood that is pumped from the left ventricle to the aorta.