Anatomy Which anatomic landmark demarcates upper gastrointestinal bleeding from lower gastrointestinal bleeding? A IIeocecal valve B Ligament of Treitz C Papilla of Vater D Pylorus 💡 Explanation Which anatomic landmark demarcates upper gastrointestinal bleeding from lower gastrointestinal bleeding? ✓ Correct Answer: B. Ligament of Treitz