Assertion: pulmonary circulation's vein | /r/Synonym | venule
Facets:
Source sentences:
text: The smallest veins are called venules.
text: The smallest veins are called venules.
text: The oxygen-poor blood leaves the capillary beds via small veins (called venules) and drains into a network of systemic veins that eventually lead to the venae cavae (either of the two large veins leading into the heart).