vasa recta

noun plural
vasa rec·ta | \-ˈrek-tə \

Medical Definition of vasa recta 

1 : numerous small vessels that arise from the terminal branches of arteries supplying the intestine, encircle the intestine, and divide into more branches between its layers

2 : hairpin-shaped vessels that arise from the arteriole leading away from a renal glomerulus, descend into the renal pyramids, reunite as they ascend, and play a role in the concentration of urine

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