proctodeum

synonym: anal pit
https://doi.org/10.1351/goldbook.11135

Ectodermal depression of the caudal end of the embryo, where later the anus is formed.

Source:
PAC, 2016, 88, 713. (Glossary of terms used in developmental and reproductive toxicology (IUPAC Recommendations 2016)) on page 796 [Terms] [Paper]
Citation: 'proctodeum' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.11135 RIS BibTex EndNote
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