what are collaterals anastomose
Arterial anastomoses provides alternate pathways (collateral channels or collateral circulation) for blood to reach a given body region. If one arterial branch is blocked or cut, the collateral channel can often provide the region with an adequate blood supply and thereby, minimizing the damage at tissue level.rterial anastomoses are abundant in abdominal organs and around joints where active body movements may hinder blood flow through one channel. Arteries that do not anastomose, or have a poorly developed collateral circulation are known as end arteries. These end arteries supply the retina, kidneys, and spleen.
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.edical 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.