The portion of the GASTROINTESTINAL TRACT between the PYLORUS of the STOMACH and the ILEOCECAL VALVE of the LARGE INTESTINE. It is divisible into three portions: the DUODENUM, the JEJUNUM, and the ILEUM.
Small Intestine,Intestines, Small,Small Intestines
D012007
Rectum
The distal segment of the LARGE INTESTINE, between the SIGMOID COLON and the ANAL CANAL.
Rectums
D006801
Humans
Members of the species Homo sapiens.
Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man