cement glands
{{Short description|Small organs in thorny-headed worms}}
Cement glands are small organs found in Acanthocephala that are used to temporarily close the posterior end of the female after copulation.{{cite book | last1=Bush | first1=Albert O.| last2=Fernández| first2=Jacqueline C.| last3=Esch| first3=Gerald W.| last4=Seed| first4=J. Richard | title=Parasitism : the diversity and ecology of animal parasites | publisher=Cambridge University Press | location=Cambridge, UK New York, NY | year=2001 | isbn=0-521-66278-8 | oclc=44131774 | page=203}}
Cement glands are also mucus-secreting organs that can attach embryos or larvae to a solid substrate. These can be found in frogs such as those in the genus Xenopus,{{cite journal |last1=Sive |first1=Hazel |last2=Bradley |first2=Leila |title=A sticky problem: The Xenopus cement gland as a paradigm for anteroposterior patterning |journal=Developmental Dynamics |year=1996 |volume=205 |issue=3 |pages=265–280 |doi=10.1002/(SICI)1097-0177(199603)205:3<265::AID-AJA7>3.0.CO;2-G |pmid=8850563 |s2cid=22326745 |url=https://anatomypubs.onlinelibrary.wiley.com/doi/epdf/10.1002/%28SICI%291097-0177%28199603%29205%3A3%3C265%3A%3AAID-AJA7%3E3.0.CO%3B2-G |access-date=29 September 2021|url-access=subscription }} fish such as the Mexican tetra,{{cite journal |last1=Pottin |first1=Karen |last2=Hyacinthe |first2=Carole |last3=Rétaux |first3=Sylvie |title=Conservation, development, and function of a cement gland-like structure in the fish Astyanax mexicanus |journal=Proceedings of the National Academy of Sciences |date=October 5, 2010 |volume=107 |issue=40 |pages=17256–17261 |doi=10.1073/pnas.1005035107 |pmid=20855623 |pmc=2951400 |bibcode=2010PNAS..10717256P |doi-access=free }} and crustaceans.