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Encyclopedia > Anastomosis

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Anastomosis (plural anastomoses) refers to a form of network in which streams both branch out and reconnect. The term is used in Medicine, Biology, and Geology.


Medicine

Anastomosis is the surgical connection of two structures.[1] It commonly refers to connections between blood vessels or connections between other tubular structures such as loops of intestine. In circulatory anastomosis, many arteries naturally anastomose with each other. For example: the inferior epigastric artery and superior epigastric artery). In surgery, surgical anastomosis occurs when a segment of intestine is resected and the two remaining ends are sewn or stapled together (anastomosed). The procedure is referred to as intestinal anastomosis. The arterial system The blood vessels are part of the circulatory system and function to transport blood throughout the body. ... In anatomy, the intestine is the portion of the alimentary canal extending from the stomach to the anus and, in humans and other mammals, consists of two segments, the small intestine and the large intestine (or colon). ... This article or section does not cite its references or sources. ... Right inferior epigastric artery - view from inside of abdomen. ... Superior epigastric artery, internal thoracic artery and inferior epigastric artery. ... In surgical jargon, to create an anastomosis is to stitch together two cut ends of any hollow organ, usually to restore continuity after resection, or to bypass an unresectable disease process. ...


Pathological anastomosis results from trauma or disease and may involve veins, arteries, or intestines. These are usually referred to as fistulas. In the cases of veins or arteries, traumatic fistulas usually occur between artery and vein. Traumatic intestinal fistulas usually occur between two loops of intestine (enetero-enteric fistula) or intestine and skin (enterocutaneous fistula). Portacaval anastomosis, by contrast, is an anastomosis between a vein of the portal circulation and a vein of the systemic circulation, ans is not usually called a fistula. Pathology (from Greek pathos, feeling, pain, suffering; and logos, study of; see also -ology) is the study of the processes underlying disease and other forms of illness, harmful abnormality, or dysfunction. ... In the circulatory system, a vein is a blood vessel that carries blood toward the heart. ... Section of an artery For other uses, see Artery (disambiguation). ... In medicine, a fistula (pl. ... It has been suggested that this article or section be merged with Epidermis (skin). ... A portacaval anastomosis is a specific type of anastomosis that occurs between the veins of portal circulation and those of systemic circulation. ... Circulation of blood to the liver from the small intestine via the portal vein. ... Systemic circulation is the portion of the cardiovascular system which carries oxygenated blood away from the heart, to the body, and returns deoxygenated blood back to the heart. ...


Biology

In evolution, anastomosis is a recombination of evolutionary lineage. Conventional accounts of evolutionary lineage present themselves as the simple branching out of species into novel forms. Under anastomosis, species might recombine after initial branching out, such as in the case of recent research which shows that humans and chimpanzees may have interbred after an initial branching out.[2] A second case in which the idea of anastomosis finds application is in the theory of Symbiogenesis, in which new forms of life (species) are seen to emerge from the formation of novel symbiotic relationships. This article is about evolution in biology. ... Symbiogenesis refers to the merging of two separate organisms to form a single new organism. ...


Geology

In geology, anastomosis is used to refer to quartz (or other) veins displaying this property, which is often related to shearing in metamorphic regions. There is also a type of stream called anastomosing, which consists of a wide strath and multiple thalwegs divided by vegetated stabilized islands within subparallel banks. This article includes a list of works cited but its sources remain unclear because it lacks in-text citations. ...


References

  1. ^ Gylys, Barbara A. and Mary Ellen Wedding, Medical Terminology Systems, F.A. Davis Company, 2005.
  2. ^ Patterson, Nick; et al. (May 2006). "Genetic evidence for complex speciation of humans and chimpanzees". Nature 441: 1103–1108. DOI:10.1038/nature04789. Retrieved on 2006-09-18. 

  Results from FactBites:
 
Anastomosis - Wikipedia, the free encyclopedia (673 words)
A second case in which the idea of anastomosis finds application is in the theory of Symbiogenesis, in which the emergence of new forms of life (species) are seen to be emergent from the formation of novel symbiotic relationships.
Coronary anastomoses are a clinically vital subject: the coronary anastomosis is the blood supply to the heart.
anastomosis is to stitch together two cut ends of any hollow organ, usually to restore continuity after resection, or to bypass an unresectable disease process.
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