What is the excellent mesenteric artery?

The excellent mesenteric artery (SMA) is a large blood vessel that adds oxygen and nutrients to the lower digestive tract of the human abdomen. The term "mesenters" concerns the double -layer membrane called peritonium that surrounds small and large intestines. The outer layer anchor the organs into the abdominal cavity; The inner layer allows organs relative freedom of movement. Between the two layers are blood vessels, lymphatic vessels and nerves. Blood vessels come from SMA. Several main blood vessels are devoted to it and only 0.4 inches (1 cm) under the celiac stomach, liver and spleen, is the intersection of the superior intermediate artery. Along with it, it is an excellent mesenteric vein that is heading back to the heart with carbon dioxide and other side products of metabolism. TSMA is the main artery; It is not paired or divided into separate arteries.

, however, excellent mesenteric artery makes another branch. Lower pancreatThe iCodenal artery supplies blood to the pancreas and most of the duodenum that connects the stomach with the small intestine. Intestinal arteries - Junal and ileal - branches and spread over the intricate small intestine coils. Three colic arteries cover most of the large intestine or large intestine. Finally, the ilekolic artery, the final terminal branch of the superior mesenteric arteries, is covered with anything, including additions.

SMA begins to branch, immediately after browsing under the neck of the abdominal. This area is overloaded with other organ structures, including splenic vein from the spleen, a renal vein from the left kidney and the lower end of the duodenum tubular. Although very much, physiological problems can develop when large blood vessels compress and prevent these neighboring structures. The state called Lutcracker syndrome may result from the influenced flow of venous blood from the kidneys. The excellent mesenteric artery syndrome, which is potentially fatal, depending on the degree of obstruction, occurs when the digestive tract is disturbedby a duodenum.

As a rule, the large main blood vessels of the human circulatory system are less susceptible to vascular diseases, they believe partly due to hemodynamics, such as the volume and rate of fluid flow. SMA rarely develops atherosclerosis from cholesterol plaque. On the contrary, the disease and trauma of the main blood vessels are often catastrophic. Oblift or obstacle to SMA, such as a blood clot, causes a condition called intestinal ischemia, which is fatal in 80 percent of cases.