Which organ is a foregut derivative?

Which organ is a foregut derivative?

• A. Spleen
• B. Cecum
• C. Pancreas
• D. Descending colon

Answer: (C)

Foregut derivatives come from the anterior part of the primitive gut and include the organs formed from that region, such as the esophagus, stomach, proximal duodenum, liver and biliary system, and the pancreas. The pancreas develops from endodermal tissue in the foregut as two pancreatic buds—the dorsal and ventral buds—which later rotate and fuse to create the organ. Because its origin is from foregut endoderm, the pancreas is a foregut derivative. By contrast, the cecum comes from the midgut and the descending colon from the hindgut, so they are not foregut derivatives. The spleen sits near the foregut region but is typically discussed separately as arising from mesenchyme in the dorsal mesogastrium, whereas the pancreas serves as a classic and clear foregut example.

Foregut derivatives come from the anterior part of the primitive gut and include the organs formed from that region, such as the esophagus, stomach, proximal duodenum, liver and biliary system, and the pancreas. The pancreas develops from endodermal tissue in the foregut as two pancreatic buds—the dorsal and ventral buds—which later rotate and fuse to create the organ. Because its origin is from foregut endoderm, the pancreas is a foregut derivative. By contrast, the cecum comes from the midgut and the descending colon from the hindgut, so they are not foregut derivatives. The spleen sits near the foregut region but is typically discussed separately as arising from mesenchyme in the dorsal mesogastrium, whereas the pancreas serves as a classic and clear foregut example.