Vascular supply of the intestine

Vascular supply to the duodenum

The duodenum follows the stomach in the digestive tract and serves to further digest the chyme. This is supplied via two arteries, the upper pancreatic small intestinal artery (Superior pancreaticoduodenal artery) and the lower pancreatic small intestinal artery (Inferior pancreaticoduodenal artery). The venous drainage occurs through several pancreatic small intestinal veins (Venae pancreaticoduodenales) into the portal vein system (Porta vein) the liver (intestinal vascular supply).

Vascular supply to the small intestine

Of the Small intestine serves the absorption of carbohydrates, proteins (proteins) and fats and connects the duodenum and Large intestine. The entire small intestine is passed through the superior intestinal artery (Superior mesenteric artery) provided. This branches further into four venous arteries (Arteriae jejunales) and twelve ileum arteries (Ileal arteries) that supply the jejunum and ileum. Of the venous outflow takes place via jejunal veins (Venae jejunales) and ileum veins (arteriae ileales) into the superior intestinal vein, which then in turn into the Portal vein system of the liver opens (vascular supply intestine).

Vascular supply of the large intestine

Of the Large intestine serves to reabsorb water and thicken the stool. Of the Appendix (Appendix vermiformis), of the appendix (Caecum), of the ascending branch of the large intestine (Ascending colon) as well as the right two thirds of the transverse part of the colon (Transverse colon) are used by the upper viscera artery (Superior mesenteric artery) provided. This is still divided into the middle colon artery (Arteria colica media), the right colon artery (Arteria colica dextra) and the Ileum colon artery (Ileocolica artery). The venous outflow takes place via the middle large intestinal vein (Vena colica media), the right colon vein (Vena colica sinistra) and the Ileum-colon vein (Vena ileocolica) in the superior visceral vein (Superior mesenteric vein). This flows into the Portal vein system (Porta vein) of the liver. The left third of the transverse part of the colon (Transverse colon), the descending branch of the colon (Descending colon) as well as the Sigmoid colon (Sigmoid colon) are from the lower intestinal artery (Inferior mesenteric artery) provided. This still splits into the left intestinal artery (Left colic artery), the Sigmoid arteries (Sigmoid arteries) as well as the upper one Rectal artery (Superior rectal artery). Of the venous outflow takes place via the left intestinal vein (Vena colica sinistra), the Sigmoid veins (Sigmoid veins) as well as the upper one Rectal vein (Superior rectal vein). These all flow over the lower one Intestinal vein (Inferior mesenteric vein) in the Portal vein system (Porta vein) the liver.

Vascular supply to the rectum

Of the Rectum serves the Storage of the chair (Continence) and the controlled excretion (defecation). The arterial supply of the rectum occurs over three arteries. The superior rectal artery (Superior rectal artery) arising from the lower intestinal artery (Superior mesenteric artery) arises, supplies the upper part of the rectum. The middle rectal artery (Media rectal artery) arises from the internal iliac artery (Internal iliac artery) and supplies the middle part of the rectum. The lower part of the rectum is through the lower rectal artery (Inferior rectal artery) from the internal pudendal artery (Internal pudendal artery) arises, arterially supplied. Of the venous outflow occurs via the lower and middle rectal vein (Venae rectales mediae et inferiores) into the inferior vena cava. The superior rectal vein (Superior rectal vein) serves the venous drainage of the upper part of the rectum. Unlike the other two rectal veins, this vein does not enter the inferior vena cava (Inferior vena cava), but about the lower visceral vein (Inferior mesenteric vein) in the Portal vein system (Porta vein) the liver (intestinal vascular supply).