Anatomy
·Abdomen
Small Intestine (Jejunum & Ileum)
⭐ PREMIUM
Jejunum and ileum are intraperitoneal midgut, suspended by the mesentery. Examiners ask how to tell them apart.
JEJUNUM vs ILEUM
• Jejunum (upper left): thicker wall, wider lumen, deeper red, LONG vasa recta + FEW large arcades, less fat in mesentery, tall plicae circulares.
• Ileum (lower right): thinner wall, narrower lumen, paler, SHORT vasa recta + MANY arcades, more mesenteric fat, Peyer's…
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