pseudocoelomate (s
'dōsē`ləmāt'), any of a group of invertebrates with a three-layered body that has a fluid-filled body cavity (pseudocoelom) between the endoderm and the mesoderm (the innermost and middle tissue layers). The pseudocoelom is contrasted with the coelom of mollusks, annelid worms, and the more complex animals (including humans and other vertebrates). Pseudocoelomates lack a circulatory system, and the pseudocoelom itself lacks the endothelial lining of a coelom. The hydrostatic pressure of the pseudocoelom gives the body a supportive framework that acts as a skeleton. Nematodes or roundworms (see Nematoda Nematoda (nĕm'ətōd`ə)
..... Click the link for more information. ), rotifers (see Rotifera Rotifera, phylum of predominantly free-living, microscopic, aquatic or semiterrestrial pseudocoelomates . Each rotifer has a head bearing a crown of cilia, the corona, at the anterior end; most rotifers feed with the aid of currents generated by the coronal cilia.
..... Click the link for more information. ), acanthocephalans (spiny-headed worms), kinorhynchs (see Kinorhyncha Kinorhyncha (kĭn'ərĭng`kə)
..... Click the link for more information. ) and nematomorphs or horsehair worms (see Nematomorpha Nematomorpha (nĕm'ətəmôr`fə), small (about 230 species) phylum of pseudocoelomates ; the horsehair worms .
..... Click the link for more information. ) are pseudocoelomates.
'dōsē`ləmāt'), any of a group of invertebrates with a three-layered body that has a fluid-filled body cavity (pseudocoelom) between the endoderm and the mesoderm (the innermost and middle tissue layers). The pseudocoelom is contrasted with the coelom of mollusks, annelid worms, and the more complex animals (including humans and other vertebrates). Pseudocoelomates lack a circulatory system, and the pseudocoelom itself lacks the endothelial lining of a coelom. The hydrostatic pressure of the pseudocoelom gives the body a supportive framework that acts as a skeleton. Nematodes or roundworms (see Nematoda Nematoda (nĕm'ətōd`ə)..... Click the link for more information. ), rotifers (see Rotifera Rotifera, phylum of predominantly free-living, microscopic, aquatic or semiterrestrial pseudocoelomates . Each rotifer has a head bearing a crown of cilia, the corona, at the anterior end; most rotifers feed with the aid of currents generated by the coronal cilia.
..... Click the link for more information. ), acanthocephalans (spiny-headed worms), kinorhynchs (see Kinorhyncha Kinorhyncha (kĭn'ərĭng`kə)
..... Click the link for more information. ) and nematomorphs or horsehair worms (see Nematomorpha Nematomorpha (nĕm'ətəmôr`fə), small (about 230 species) phylum of pseudocoelomates ; the horsehair worms .
..... Click the link for more information. ) are pseudocoelomates.
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