Assertion: vein's blood vessel | /r/CapableOf | call capillary
Facets:
Source sentences:
text: Deoxygenated blood that flows into your veins is collected within tiny blood vessels called capillaries.
text: From your arteries, the blood flows through tiny blood vessels called capillaries, where it gives up its oxygen to the body's tissues.
text: These then keep branching out more, like the branches of a tree, until they form a very fine network of very thin blood vessels called capillaries.