ileum

Function

• major site of absorption of vitamin B12
• major site of resorption of bile acids in enterohepatic circulation

Arterial supply

• via the superior mesenteric artery.

Clinical significance

• ileal resection necessities
  • monthly vitamin B12 injections
  • cholestyramine for chronic watery diarrhea due to disruption of enterohepatic circulation

More general terms

• gastrointestinal structure

Additional terms

• superior mesenteric artery

Component of

• small intestine; small bowel