Harkins Joshua M., Ahmad Bareeqah
LECOM
Samaritan Medical Center, Watertown NY
The veins that drain the gastrointestinal organs parallel the major arteries that supply the foregut, midgut, and hindgut, including the celiac, superior mesenteric, and the inferior mesenteric arteries respectively. These veins eventually convene at the portal vein, forming a single venous inflow tract into the liver. The celiac vein drains the foregut structures, including the stomach, through the second part of the duodenum. The superior mesenteric vein drains the third part of the duodenum through the initial two-thirds of the transverse colon. Finally, the inferior mesenteric vein drains the remaining one-third of the transverse colon through the rectum. These veins comprehensively drain nutrients and toxins from the digestive intake and ultimately provide approximately 75% of the liver's blood supply, the remainder coming from the hepatic artery, eventually draining into the hepatic veins and systemic circulation.
引流胃肠器官的静脉与供应前肠、中肠和后肠的主要动脉并行，分别包括腹腔干、肠系膜上动脉和肠系膜下动脉。这些静脉最终在门静脉汇合，形成一条进入肝脏的单一静脉流入通道。腹腔静脉引流前肠结构，包括胃，直至十二指肠第二部。肠系膜上静脉引流十二指肠第三部至横结肠的前三分之二。最后，肠系膜下静脉引流横结肠的后三分之一至直肠。这些静脉全面引流消化摄入物中的营养物质和毒素，最终提供肝脏约75%的血液供应，其余来自肝动脉，最终流入肝静脉和体循环。
