"In anatomy of the digestive system, the jejunum is the central of the three divisions of the small intestine and lies between the duodenum and the ileum. In adult humans, it is usually between 2-8m (06' 07"-26' 03") long. The pH in the jejunum is usually between 7 and 8 (neutral or slightly alkaline)." Read more about thejejunum at Wikipedia.
