anal canal

https://doi.org/10.1351/goldbook.10374

Terminal part of the large intestine between the rectum and anus.

Note: The anal canal arises as the dorsal cavity of the cloaca after division of the cloaca by the urorectal septum, the ventral cavity becoming the urogenital sinus.

See also: anal membrane

Source:
PAC, 2016, 88, 713. 'Glossary of terms used in developmental and reproductive toxicology (IUPAC Recommendations 2016)' on page 721 (https://doi.org/10.1515/pac-2015-1202)