Assertion: circulatory system's vessel | /r/Synonym | vein
Facets:
Source sentences:
text: He stated that the heart was a pumping organ provided with valves, to maintain the flow of blood only in one direction; that blood was distributed to the organs by means of deep laying vessels, which he called arteries, and the blood was returned to the heart by more superficial vessels called veins, which still holds true.
text: Walls, Vessels, Veins
text: The circulatory system includes the heart; a system of vessels called arteries, veins, and capillaries; and blood.