Small Intestine

• Small intestine
  • The small intestine is the longest part (about 7m) of the gastrointestinal tract
  • Extends from Pylorus to Ileocecal valve. Ileocecal Valve
  • The small bowel is located in the center of abdomen
  • Fairly narrow about 2.5 cm tube like structure winds compactly back and forth within the abdominal cavity
  • The small intestine is identified by valvulae circulares or circular folds of mucosa on barium x-ray study.
• Parts
  • duodenum (proximal)
  • jejunum (middle)
  • ileum. (distal)

Relationship of small bowel

• Anterior
  • Greater omentum
  • Abdominal wall
• Surrounded by colon
• Some small bowel extends to pelvis