Profile view of a human embryo estimated at twenty or twenty-one days old. (Hindgut labeled at lower left.)
The hindgut (or epigaster) is the posterior (caudal) part of the alimentary canal. In mammals, it includes the distal third of the transverse colon and the splenic flexure, the descending colon, sigmoid colon and rectum. In zoology, the term hindgut refers also to the cecum and ascending colon.
- Abdominal part of digestive tube and its attachment to the primitive or common mesentery. Human embryo of six weeks.
- Tail end of human embryo twenty-five to twenty-nine days old.
- Metenteron in the milliped Illacme plenipes.