The first portion of the duodenum (duodenal bulb) is at the far right.
The first portion of the duodenum (duodenal bulb) is at the far right.
十二指肠的起始段（十二指肠球部）在右边较远处。
The first portion of the duodenum (duodenal bulb) is at the far right.
十二指肠的起始段（十二指肠球部）在右边较远处。