Anastomosis - Definition

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Anastomosis consists of the connection between two parts of the human body, initially of natural origin and concerning two blood vessels, but now by extension any two similar "conduits". The most common of anastomoses is that of the blood vessels which is naturally created to form new canals for blood circulation when a vein is blocked. The arterial circle of Willis near the brain is a system of anastomoses that allows for better blood circulation. The colostomy, a surgical form of anastomosis, corresponds to the joining of the colon and the abdomen.