small intestine

UBERON:0002108 · anterior intestine, intestinum tenue, mid intestine, small bowel, small intestine

Principal site of nutrient absorption.

Where it sits

• part of digestive system

Markers that report on it

• Cobalamin transported by main
  Vitamin B12 is absorbed into the body through the small intestine.
• Iron, serum transported by
  Iron from the diet is absorbed in the small intestine, and hepcidin stops that absorption when iron is high.