collateral circulation

noun

Medical Definition of collateral circulation

: circulation of blood established through enlargement of minor vessels and anastomosis of vessels with those of adjacent parts when a major vein or artery is functionally impaired (as by obstruction) also : the modified vessels through which such circulation occurs

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“Collateral circulation.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/collateral%20circulation. Accessed 11 Aug. 2020.

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