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pseudocoelom

A Dictionary of Zoology | 1999 | | Â© A Dictionary of Zoology 1999, originally published by Oxford University Press 1999. (Hide copyright information) Copyright

pseudocoelom A second body cavity (the first being the gut) which occupies a space between the mesoderm of the body wall and the endoderm of the gut. There are no mesenteries suspending the internal organs and no muscular layers around the gut; thus in no pseudocoelomate animal does muscular peristalsis move food through the alimentary canal.

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Magazine article from: Journal of the Geological Society; 1/1/1998; ; 700+ words ; ...usually attributed to a coelomate or pseudocoelomate metazoan, is described from the middle...putative evidence for coelomates or pseudocoelomate discovered so far, with a minimum...cnidarian to triploblastic coelomate or pseudocoelomate grade (e.g. McMenamin &...

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Related entries from encyclopedias, dictionaries, and thesauruses

	pseudocoelomate Book article from: The Columbia Encyclopedia, Sixth Edition pseudocoelomate , any of a group of invertebrates with a three-layered body that has a fluid-filled body cavity (pseudocoelom) between the...
	Entoprocta Book article from: A Dictionary of Biology ...has been interpreted by some as a pseudocoelom, prompting the suggestion that entoprocts are allied with other pseudocoelomate animals, such as nematodes. Others argue that developmental similarities between entoprocts and bryozoans (see...
	Kinorhyncha Book article from: The Columbia Encyclopedia, Sixth Edition Kinorhyncha , phylum containing about 150 species of tiny pseudocoelomate worms, it is widely distributed in marine sediments. The kinorhynch body is divided into 13 segments, each covered with a cuticle...
	Rotifera Book article from: A Dictionary of Biology Rotifera A phylum of microscopic (0.04–2.00 mm) pseudocoelomate aquatic animals characterized by a crown of cilia at the head end. These are used in locomotion and in some species for feeding...
	Nematoda Book article from: A Dictionary of Biology Nematoda A phylum of pseudocoelomate invertebrates comprising the roundworms. They are characterized by a smooth narrow cylindrical unsegmented body tapered at both...