Micro-computed tomography visualization of the vestigial alimentary canal in adult oestrid flies. Martín-Vega D(1)(2), Garbout A(3), Ahmed F(3).
The alimentary canal is the long tube of organs — including the esophagus, stomach, and intestines — that runs from the mouth to the anus. An adult's digestive.
The digestive system -- which can be up to 30 feet in length in adults -- is usually divided into eight parts: the mouth, the esophagus, the stomach, the small.