Title: SMALL INTESTINE
Headings: SMALL INTESTINE
SMALL INTESTINE
Anatomic features
MUCOSA
Function:
Composition:
SUBMUCOSA
BRUNNER GLANDS
MUSCULARIS EXTERNA
Function:
SEROSA (PERITONEUM)

Content: SMALL INTESTINE
SMALL INTESTINE
Query to the TRRD database: genes expressing in SMALL INTESTINE
Select species: All Human Murine
Function: digestion of food and absorption of the products of digestion. Anatomic features
Consist of three anatomical segments: duodenum (25 cm long), jejunum (2.5 m long), and ileum (3.5 m long). Plicae circularis (valves of Kerckring) - transverse semilunar folds that contain a core  of submucosa. Villi - finger-like and leaf-like projections of the mucosa that  extend into the intestinal lumen. Microvilli of the enterocytes - form the striated border and provide  the major amplification of the luminal surface. Intestinal glands (krypts of Lieberkuhn) - simple tubular  glands that extend from the muscularis mucosae and open to the  luminal surface at the base of villi.