What is Small intestine?
[[File:Illu small intestine.jpg|thumb]] The '''small intestine''' is between the [[stomach]] and the [[large intestine]], and is where most of the [[digestion]] and [[absorption]] happen.<ref>The main function of the small intestine is the absorption of [[nutrient]]s and [[mineral]]s from food. [http://www.britannica.com/EBchecked/topic/275485/human-body]</ref> In [[human]]s over five years old, the small intestine is about 7.5 meters long. However, while it is long in length, it is short in diameter which is why it is dubbed the 'small intestine'. The small intestine has three regions: the [[duodenum]], the [[jejunum]], and the [[ileum]]. *The duodenum: receives [[bile]] and juice from the [[pancreas]], and is where most digestion in the small intestine takes place. [[Secretion|Secretions]] limit, or [[Base (chemistry)|neutralise]], the stomach acidity, and [[enzymes]] help to digest the food. *The jejunum: the products of digestion ([[Sugar|sugars]], [[amino acids]], and [[fatty acid]]s) are [[Absorption|absorbed]] into the [[Circulatory system|bloodstream]] here. *The ileum: absorbs [[vitamin B12]], [[bile]] salts, and any other products of digestion that were not absorbed by the jejunum. ==References== {{reflist}} {{Gastrointestinal system}} {{biology-stub}} [[Category:Anatomy of the digestive system]]