The Superior Mesenteric Artery. The superior mesenteric artery (SMA) is a major artery of the abdomen. It arises from the abdominal aorta, and supplies arterial blood to the organs of the midgut – which spans from the major duodenal papilla (of the duodenum) to the proximal 2/3 of the transverse colon.
The superior mesenteric artery is a major blood vessel in the digestive system. This artery branches off the abdominal aorta and supplies oxygenated blood to the pancreas and the lower parts of the intestine. This includes the lower duodenum, as well as transverse colon.
what does the superior mesenteric vein supply? The superior mesenteric vein is a blood vessel that drains blood from the small intestine (jejunum and ileum). At its termination behind the neck of the pancreas, the superior mesenteric vein combines with the splenic vein to form the hepatic portal vein.
Also to know is, where is the superior mesenteric artery?
In human anatomy, the superior mesenteric artery (SMA) arises from the anterior surface of the abdominal aorta, just inferior to the origin of the celiac trunk, and supplies the intestine from the lower part of the duodenum through two-thirds of the transverse colon, as well as the pancreas.
What are the primary branches of the superior and inferior mesenteric arteries?
Blood supply and lymphatic drainage of the large intestine The large intestine is supplied by the superior and inferior mesenteric arteries (Figs 4.33–4.36). The branches of the superior mesenteric artery are the ileocolic, right colic and the middle colic arteries (Figs 4.33–4.34).
Is superior mesenteric artery life threatening?
In some cases, SMA syndrome may occur alongside a serious, life-threatening condition such as cancer or AIDS. Even in these cases, though, treatment of the SMA syndrome can lead to a reduction in symptoms and an increased quality of life.
What is mesenteric artery?
The mesenteric arteries take blood from the aorta and distribute it to a large portion of the gastrointestinal tract. The term mesenteric artery is also used to describe smaller branches of these vessels which, particularly in smaller animals, provide a significant source of vascular resistance.
What does the gonadal artery supply?
The testicular artery (the male gonadal artery, also called the internal spermatic arteries in older texts) is a branch of the abdominal aorta that supplies blood to the testis. It is a paired artery, with one for each of the testes. It is the male equivalent of the ovarian artery.
What is mesenteric artery stenosis?
Mesenteric artery stenosis results in insufficient blood flow to the small intestine, causing intestinal ischemia. Chronic mesenteric ischemia is usually due to atherosclerosis, but is rarely caused by extensive fibromuscular disease or trauma.
What organ does the inferior mesenteric artery supply?
The inferior mesenteric artery (IMA) is a major branch of the abdominal aorta. It supplies arterial blood to the organs of the hindgut – the distal 1/3 of the transverse colon, splenic flexure, descending colon, sigmoid colon and rectum.
What are the branches of superior mesenteric artery?
Major Branches Inferior Pancreaticoduodenal Artery. Jejunal and Ileal Arteries. Middle and Right Colic Arteries. Ileocolic Artery.
How many mesenteric arteries are there?
What is the largest artery?
Is SMA Syndrome life threatening?
SMA syndrome is a rare but potentially life-threatening cause of abdominal pain. In SMA syndrome, this fat pad atrophies because of chronic vomiting resulting in compression of the proximal duodenum and the aorta. Typical symptoms include nausea, vomiting, and rapid weight loss.
What is superior mesenteric artery syndrome?
Superior mesenteric artery syndrome (SMAS) is a digestive condition that occurs when the duodenum (the first part of the small intestine) is compressed between two arteries (the aorta and the superior mesenteric artery). This compression causes partial or complete blockage of the duodenum.
Can SMA syndrome be cured?
SMAS is a medically treatable cause of small bowel obstruction with an overall good prognosis. Conservative medical treatment with nutritional rehabilitation is the least risky of treatment options and is successful in the majority of patients.
What are the three mesenteric arteries?
The three major mesenteric arteries that perfuse the small and the large intestines are: (1) the celiac trunk, which supplies the hepatobiliary system, spleen, and proximal small bowel; (2) the SMA, which supplies the small intestine and proximal middle colon; and (3) the inferior mesenteric artery (IMA), which
What does the Ileocolic artery supply?
Ileocolic artery. During its course, the ileocolic also branches into the appendicular, superior, and inferior cecal arteries. Through these branches, the ileocolic artery supplies oxygenated blood to the appendix, cecum, and ileum, each of which are components within the small and large intestines.
What does the celiac artery supply?
Function. The celiac artery supplies oxygenated blood to the liver, stomach, abdominal esophagus, spleen and the superior half of both the duodenum and the pancreas.