Duodenal bulb
| Duodenal bulb | |
|---|---|
| Details | |
| Identifiers | |
| Latin | ampulla duodeni, bulbus duodeni | 
| Anatomical terminology | |
The duodenal bulb (also ampulla of duodenum, duodenal ampulla, or duodenal cap) is the initial, dilated portion of (the superior part of) the duodenum just distal to the stomach; it begins at the pylorus and ends at the neck of the gallbladder. It is normally about 5 centimeters long.