Figure 1.

Comparison of anatomic features and the flow of food and bile before (Control) and after RYGB and GB-IL. (A) In response to a meal, gallbladder bile and pancreatic juices are released into the duodenum (orange) where they aide the breakdown and absorption of dietary fat as it traverses the small intestine (jejunum and ileum). Bile acids are reabsorbed in the terminal ileum (blue) in a processed termed enterohepatic circulation. (B) After RYGB, ingested food (purple dotted) and bile (green interrupted arrows) form mix (black broken arrows) delaying lipid absorption to the proximal/mid jejunum. (C) In bile diversion to the ileum the mixing of nutrients and bile is delayed until the terminal ileum.