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An end artery or terminal artery is an artery that is the only supply of oxygenated blood to a portion of tissue Arteries which do not anastomose with their neighbors are called end arteries. There is no collateral circulation present besides the end arteries.
In the cases of veins or arteries, traumatic fistulas usually occur between artery and vein. Portacaval anastomosis , by contrast, is a veno-venous anastomosis between a vein of the portal circulation and a vein of the systemic circulation , which allows blood to bypass the liver in patients with portal hypertension , often resulting in ...
In circulatory anastomoses, many arteries naturally anastomose with each other; for example, the inferior epigastric artery and superior epigastric artery, or the anterior and/or posterior communicating arteries in the Circle of Willis in the brain. The circulatory anastomosis is further divided into arterial and venous anastomosis.
Along with branches of the internal iliac arteries, it is usually sufficiently large to supply the oxygenated blood to the large intestine. [1] This means that the inferior mesenteric artery does not have to be re-implanted (re-attached) into the repaired abdominal aorta in abdominal aortic aneurysm repair. [1]
The interlobular arteries pass directly outward between the medullary rays to reach the fibrous tunic, where they end in the capillary network of this part. These vessels do not anastomose with each other, but form end-arteries. In their outward course, they give off lateral branches, which are the afferent arterioles that supply the renal ...
Proximally, its territory of distribution overlaps (forms a watershed) with the middle colic artery, and therefore the superior mesenteric artery. The SMA and IMA anastomose via the marginal artery of the colon (artery of Drummond) and via Riolan's arcade (also called the "meandering artery", an arterial connection between the left colic artery ...
The obturator artery is a branch of the internal iliac artery that passes antero-inferiorly (forwards and downwards) on the lateral wall of the pelvis, to the upper part of the obturator foramen, and, escaping from the pelvic cavity through the obturator canal, it divides into an anterior branch and a posterior branch.
It is typically a branch of the right coronary artery (70%, known as right dominance). Alternately, the PDA can be a branch of the circumflex coronary artery (10%, known as left dominance) which itself is a branch of the left coronary artery. It can also be supplied by an anastomosis of the left and right coronary artery (20%, known as co ...
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