The inferior mesenteric vein (IMV) drains the descending colon, the sigmoid colon, and the rectum through the left colic vein, the sigmoid branches, and the superior rectal vein, respectively. The IMV joins the splenic vein, which then joins the SMV to form the portal vein. The portal vein enters the liver.
Where does blood go from the inferior mesenteric vein?
The inferior mesenteric vein may join the splenic vein or the superior mesenteric vein. The portal vein thus drains blood from most of the gastrointestinal tract. Blood then traverses the liver in the hepatic sinusoids and empties into the central veins through which it reaches the inferior vena cava.
Which part of the large intestine are drained by the inferior mesenteric vein?
Tributaries of the inferior mesenteric vein drain the large intestine, sigmoid colon and rectum. These include: left colic vein.
Where does the superior mesenteric vein drain into?
Drains fromUnion of tributaries from the terminal ileum, caecum and vermiform appendixDrains toHepatic portal veinWhat does inferior mesenteric supply?
The inferior mesenteric artery, also a branch of the abdominal aorta, supplies the distal third of the transverse colon, the descending colon and sigmoid colon, and the superior portion of the rectum as the superior hemorrhoidal artery.
What drains blood from the liver?
The blood drains out of the liver via the hepatic vein. The liver tissue is not vascularised with a capillary network as with most other organs, but consists of blood filled sinusoids surrounding the hepatic cells.
Where does the inferior mesenteric drain?
The inferior mesenteric vein, a continuation of the superior rectal vein, accompanies the inferior mesenteric artery and usually drains into the splenic vein. The rectum is an important site of portosystemic anastomoses.
What drains into the superior mesenteric artery?
Superior mesenteric veinSystemHepatic portal systemDrains tohepatic portal veinArterysuperior mesenteric arteryIdentifiersWhat does superior mesenteric vein drain?
The superior mesenteric vein (SMV) is a large blood vessel in the abdomen. Its function is to drain blood from the small intestine as well as the first sections of the large intestine and other digestive organs. This large vein receives blood from several other veins (tributaries) in the digestive tract.
What organs are drained by the splenic vein and the inferior mesenteric vein?Tributaries and drainage area Thereby, the inferior splenic vein drains blood from the rectum, sigmoid, descending and distal transverse colon. Together, the superior and inferior mesenteric veins drain the majority of the gastrointestinal tract, from the stomach to the rectum.
Article first time published onWhat does portal vein drain into?
The portal vein (PV) is the main vessel of the PVS, resulting from the confluence of the splenic and superior mesenteric veins, and drains directly into the liver, contributing to approximately 75% of its blood flow [1]. Hepatic artery provides the remaining hepatic blood flow.
What vein drains into the inferior vena cava?
Both the right and left common iliac veins join to form the inferior vena cava. The lumbar veins, as well as the left and right renal veins, empty into the inferior vena cava.
What does the right gastric vein drain?
The right gastric vein (pyloric vein) drains blood from the lesser curvature of the stomach into the hepatic portal vein. It is part of the portal circulation.
What happens if inferior mesenteric artery is blocked?
In mesenteric ischemia, a blockage in an artery cuts off blood flow to a portion of the intestine. Mesenteric ischemia (mez-un-TER-ik is-KEE-me-uh) occurs when narrowed or blocked arteries restrict blood flow to your small intestine. Decreased blood flow can permanently damage the small intestine.
What does the mesenteric artery do?
The superior mesenteric artery provides oxygenated blood and nutrients to the intestines. These organs are part of the digestive system. The artery branches off of the aorta, which is the body’s largest blood vessel. Superior refers to the artery’s location above other arteries that supply the intestines.
What does the superior and inferior mesenteric artery supply?
The superior mesenteric artery supplies the midgut and the inferior mesenteric artery supplies the hindgut. … It supplies the distal third of the transverse colon, the splenic flexure, the descending colon, the sigmoid colon and the rectum, as well as the superior part of the anal canal down to the dentate line.
Which vein drains blood from the hepatic flexure of the colon?
The inferior mesenteric vein drains blood from the rectum, sigmoid colon, descending colon and splenic flexure.
Where does liver drain into?
Drains fromCentral veins of the liverDrainage areaLiver
What organs does the hepatic portal vein drain?
The portal vein or hepatic portal vein (HPV) is a blood vessel that carries blood from the gastrointestinal tract, gallbladder, pancreas and spleen to the liver.
What does the inferior vena cava do?
The superior vena cava carries blood from the head, neck, arms, and chest. The inferior vena cava carries blood from the legs, feet, and organs in the abdomen and pelvis. The vena cava is the largest vein in the body.
Which vein drains blood from gallbladder?
The portal vein drains blood from the intestine, stomach, spleen, pancreas, and gallbladder into the liver.
Which vein drains the small intestine quizlet?
Hepatic Portal Veins. Formed from smaller veins that drain the Small Intestine, Cecum and the Large Intestine to the midpoint of the Transverse Colon. Drains the Remainder of the Colon and Rectum not completed by the SMV.
What drains into splenic vein?
The splenic vein (formerly the lienal vein) is a blood vessel that drains blood from the spleen, the stomach fundus and part of the pancreas. It is part of the hepatic portal system.
What are the 3 mesenteric arteries?
The distal branches of the superior mesenteric artery (right colic, ileocolic, and middle colic) and the inferior mesenteric artery (sigmoid and left colic) supply the colon. They are also connected to each other by an intricate arterial arcade along the mesenteric border known as the Marginal Artery of Drummond.
Where is inferior Pancreaticoduodenal artery?
The inferior pancreaticoduodenal artery (IPD) is the first branch of the superior mesenteric artery. After leaving its origin, the IPD forms two pancreaticoduodenal arcades which run anteriorly and posteriorly, between the head of the pancreas and the duodenum.
What is mesenteric artery ischemia?
Mesenteric ischemia is decreased or blocked blood flow to your intestine. Ischemia means poor blood supply. The main arteries that carry blood and oxygen to your intestines are called the mesenteric arteries.
How does spleen drain?
Drains fromSplenic lobar veinsDrains toHepatic portal vein
Why does the spleen drain into the liver?
The hepatic portal vein is a vessel that moves blood from the spleen and gastrointestinal tract to the liver. The portal vein is not a true vein, which means it does not drain into the heart. … Instead, it brings nutrient-rich blood to the liver from the gastrointestinal tract and spleen.
Does hepatic portal vein drain into inferior vena cava?
The hepatic portal vein The portal vein thus drains blood from most of the gastrointestinal tract. Blood then traverses the liver in the hepatic sinusoids and empties into the central veins through which it reaches the inferior vena cava.
What does hepatic portal vein do?
A blood vessel that carries blood to the liver from the intestines, spleen, pancreas, and gallbladder.
What causes a blood clot in the portal vein?
The underlying causes of portal vein thrombosis (PVT) are frequently multifactorial and include malignancies, progressive chronic liver diseases, processes localized to the epigastrium and hepatobiliary system, and acquired as well as inherited thrombophilia.
