superior mesenteric vein in dogs

In anatomy, the superior mesenteric vein (SMV) is a blood vessel that drains blood from the small intestine. At its termination behind the neck of the pancreas, the SMV combines with the splenic vein to form the hepatic portal vein. The SMV lies to the right of the similarly named artery, the superior mesenteric artery, which originates from the abdominal aorta. [WP,unvetted]. Every claim on this page comes from the Leumas anatomy graph and carries its source.

What the superior mesenteric vein is

In anatomy, the superior mesenteric vein (SMV) is a blood vessel that drains blood from the small intestine. At its termination behind the neck of the pancreas, the SMV combines with the splenic vein to form the hepatic portal vein. The SMV lies to the right of the similarly named artery, the superior mesenteric artery, which originates from the abdominal aorta. [WP,unvetted]. The atlas records it as a vein at the organ scale in the dog.

Where the superior mesenteric vein is

It sits within the cardiovascular system. Only the system is known. The position shown carries almost no spatial information.

What the superior mesenteric vein connects to

The atlas records 12 typed relationships for it, across 7 kinds of connection. part of cardiovascular system.

Supply and innervation

Venous drainage: ileal vein, ileocolic vein, jejunal vein, middle colic vein and pancreaticoduodenal vein.

Also called

Also recorded as upper mesenteric vein and vena mesenterica superior. Searching any of those names reaches this page.

Source

Uberon multi-species anatomy ontology (Mungall et al.), CC BY 4.0. Term UBERON:0001138, version 2026-06-19, retrieved 2026-08-24. Licence: CC-BY-4.0.

• Part of: cardiovascular system.
• A kind of: mesenteric vein and vasculature.
• Connected to: hepatic portal vein.
• Drains: small intestine.
• drains to: ileal vein, ileocolic vein, jejunal vein, middle colic vein and pancreaticoduodenal vein.
• Develops from: vitelline vein.
• contains: ileal vein.

Questions

Where is the superior mesenteric vein?

It sits within the cardiovascular system. Only the system is known. The position shown carries almost no spatial information.

What does the superior mesenteric vein connect to?

Part of: cardiovascular system.

Is the superior mesenteric vein the same in other species?

This page describes the dog. The human record of the same structure sits beside it on /compare, over one shared model rather than two atlases built separately.