Assertion: vein | /r/HasAspect | larger lumens
Facets:
Source sentences:
text: The venous system is a lower-pressure system, containing veins that have larger lumens and thinner walls.
text: The venous system is a lower-pressure system, containing veins that have larger lumens and thinner walls.
text: Veins differ from arteries in that veins may have valves that project into their lumens to prevent the backflow of blood, they have larger lumens, and they have less smooth muscle.
text: They therefore have larger lumens and contribute capacitance to the circulation, holding approximately two thirds of all circulating blood.
text: The venous system is a lower-pressure system, containing veins that have larger lumens and thinner walls.