Linked from
The 8 pages that link to Duodenum, each with the reason it gives.
Small intestineBroader topic: It is where acidic chyme first mixes with major digestive secretions.
GallbladderRelated: Gallbladder bile enters the digestive tract here.
JejunumRelated: It precedes the jejunum and passes partially digested food into it.
SecretinBroader topic: Its acidic contents provide the principal stimulus for secretin release.
Biliary tractRelated: Bile enters the small intestine at this site.