Which vein drains the small and large intestines and the pancreas?

A) superior mesenteric vein
B) lumbar vein
C) gastrosplenic vein
D) caudal vein

Superior Mesenteric Vein

A large vein that drains blood from the small intestine, ascending colon, and part of the transverse colon into the portal vein.

Gastrosplenic Vein

A blood vessel that drains blood from the stomach and spleen into the hepatic portal vein.

Lumbar Vein

A vein that drains the posterior abdominal wall and the spinal cord in the lumbar region.