sentences:  Circulatory anastomosis
  
  A circulatory anastomosis is a connection (an anastomosis) between two blood vessels, such as between arteries (arterio-arterial anastomosis), between veins (veno-venous anastomosis) or between an artery and a vein (arterio-venous anastomosis).Anastomoses between arteries and between veins result in a multitude of arteries and veins, respectively, serving the same volume of tissue.