Which part of the small intestine receives bile and pancreatic juice to aid digestion?

Which part of the small intestine receives bile and pancreatic juice to aid digestion?

• A. Jejunum
• B. Ileum
• C. Small intestine
• D. Duodenum

Answer: (D)

The site where bile and pancreatic juice mix with chyme to aid digestion is the first part of the small intestine, the duodenum. Bile and pancreatic secretions enter the duodenum through the hepatopancreatic ampulla (via the major duodenal papilla), so chyme from the stomach is exposed to bile for fat emulsification and to pancreatic enzymes for carbohydrate, protein, and fat digestion right away. After this initial mixing, digestion continues in the rest of the small intestine, but the entry point for these digestive fluids is the duodenum. Jejunum and ileum mainly focus on absorption, not the delivery of these secretions.

The site where bile and pancreatic juice mix with chyme to aid digestion is the first part of the small intestine, the duodenum. Bile and pancreatic secretions enter the duodenum through the hepatopancreatic ampulla (via the major duodenal papilla), so chyme from the stomach is exposed to bile for fat emulsification and to pancreatic enzymes for carbohydrate, protein, and fat digestion right away. After this initial mixing, digestion continues in the rest of the small intestine, but the entry point for these digestive fluids is the duodenum. Jejunum and ileum mainly focus on absorption, not the delivery of these secretions.