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16 The upper gastrointestinal tract II
From superior mesenteric artery
Redder
wall
Jejunal branches Ileal branches
Simple arcades Multiple arcades
Jejunum Ileum
Thicker wall Thinner wall
(feels full) (feels empty)
Fig.16.1
The jejunum and the ileum can be distinguished by their colour, feel and the complexity of the arterial arcades
Fig.16.2
Small bowel obstruction, showing dilated bowel loops
40 Abdomen and pelvis
