In zoology, the epidermis is an epithelium (sheet of cells) that covers the body of a eumetazoan (animal more complex than a sponge).[1][2] Eumetazoa have a cavity lined with a similar epithelium, the gastrodermis, which forms a boundary with the epidermis at the mouth.[2]
Sponges have no epithelium, and therefore no epidermis or gastrodermis.[2] The epidermis of a more complex invertebrate is just one layer deep, and may be protected by a non-cellular cuticle. The epidermis of a higher vertebrate has many layers, and the outer layers are reinforced with keratin and then die.[3]
^Spearman, R.I.C (1973). "Function Adaptation in the Invertebrate Integument". The integument: a textbook of skin biology. Biological structure and function. Vol. 3. CUP Archive. pp. 15–17. ISBN0-521-20048-2. Retrieved 21 Mar 2010.
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epidermis, zoology, other, uses, epidermis, zoology, epidermis, epithelium, sheet, cells, that, covers, body, eumetazoan, animal, more, complex, than, sponge, eumetazoa, have, cavity, lined, with, similar, epithelium, gastrodermis, which, forms, boundary, with. For other uses see Epidermis In zoology the epidermis is an epithelium sheet of cells that covers the body of a eumetazoan animal more complex than a sponge 1 2 Eumetazoa have a cavity lined with a similar epithelium the gastrodermis which forms a boundary with the epidermis at the mouth 2 Sponges have no epithelium and therefore no epidermis or gastrodermis 2 The epidermis of a more complex invertebrate is just one layer deep and may be protected by a non cellular cuticle The epidermis of a higher vertebrate has many layers and the outer layers are reinforced with keratin and then die 3 References Edit Ruppert E E Fox R S amp Barnes R D 2004 Introduction to Metazoa Invertebrate Zoology 7 ed Brooks Cole pp 59 60 ISBN 0 03 025982 7 a b c Ruppert E E Fox R S amp Barnes R D 2004 Introduction to Eumetazoa Invertebrate Zoology 7 ed Brooks Cole pp 99 103 ISBN 0 03 025982 7 Spearman R I C 1973 Function Adaptation in the Invertebrate Integument The integument a textbook of skin biology Biological structure and function Vol 3 CUP Archive pp 15 17 ISBN 0 521 20048 2 Retrieved 21 Mar 2010 nbsp This animal anatomy related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Epidermis zoology amp oldid 1100621133, wikipedia, wiki, book, books, library,
