Enterocoelom (adjective forms: enterocoelic and enterocoelous) describes both the process by which some animal embryos develop and the origin of the cells involved. In enterocoely, a mesoderm (middle layer) is formed in a developing embryo, in which the coelom appears from pouches growing and separating from the digestive tract (also known as the embryonic gut, or archenteron).[1] As the incipient coelomic epithelium originates from archenteral diverticula, the endoderm therefore gives rise to the mesodermal cells.[1]
Diagram depicting a cross section of a deuterostome (vertebrate) embryo in the neurula stage. The location of the coelom is indicated.
The term enterocoely derives from the Ancient Greek words ἔντερον (énteron), meaning 'intestine', and κοιλία (koilía), meaning 'cavity'.[2][3] This refers to the fact that fluid-filled body cavities are formed from pockets related to the embryonic gut.
Taxonomic distributionedit
Enterocoely is the stage of embryological development of deuterostomes in which the coelom forms.[4] This type of coelom formation occurs in deuterostome animals, which for this reason are also known as enterocoelomates.
Enterocoelous development begins once the embryo reaches the gastrula phase of development. At this point, there are two layers of cells: the ectoderm (outermost) and the endoderm (innermost) layers. The mesoderm begins to form as two "pockets" of tissue (one above the endoderm, and one below) are formed via folding of the endoderm. These "pockets" begin to grow larger, and as they do so, they extend towards each other. When the two "pockets" of cells meet, the mesoderm is formed – a complete layer of tissue right in between the endoderm and ectoderm layers. This then leads to the formation of a coelom.
The stage of coelom formation starts with the gastrula; as the archenteron forms, pockets of migrating cells also form, creating another layer between the endoderm and ectoderm, the mesoderm. These pockets gradually expand to form the coelom.[5]
^ abLüter, Carsten (2000-06-01). "The origin of the coelom in Brachiopoda and its phylogenetic significance". Zoomorphology. 120 (1): 15–28. doi:10.1007/s004359900019. ISSN 1432-234X. S2CID 24929317.
enterocoely, enterocoelom, adjective, forms, enterocoelic, enterocoelous, describes, both, process, which, some, animal, embryos, develop, origin, cells, involved, enterocoely, mesoderm, middle, layer, formed, developing, embryo, which, coelom, appears, from, . Enterocoelom adjective forms enterocoelic and enterocoelous describes both the process by which some animal embryos develop and the origin of the cells involved In enterocoely a mesoderm middle layer is formed in a developing embryo in which the coelom appears from pouches growing and separating from the digestive tract also known as the embryonic gut or archenteron 1 As the incipient coelomic epithelium originates from archenteral diverticula the endoderm therefore gives rise to the mesodermal cells 1 Diagram depicting a cross section of a deuterostome vertebrate embryo in the neurula stage The location of the coelom is indicated Contents 1 Etymology 2 Taxonomic distribution 3 Embryonic development 4 See also 5 ReferencesEtymology editThe term enterocoely derives from the Ancient Greek words ἔnteron enteron meaning intestine and koilia koilia meaning cavity 2 3 This refers to the fact that fluid filled body cavities are formed from pockets related to the embryonic gut Taxonomic distribution editEnterocoely is the stage of embryological development of deuterostomes in which the coelom forms 4 This type of coelom formation occurs in deuterostome animals which for this reason are also known as enterocoelomates By contrast in protostomes the body cavity is often formed by schizocoely 4 Embryonic development editEnterocoelous development begins once the embryo reaches the gastrula phase of development At this point there are two layers of cells the ectoderm outermost and the endoderm innermost layers The mesoderm begins to form as two pockets of tissue one above the endoderm and one below are formed via folding of the endoderm These pockets begin to grow larger and as they do so they extend towards each other When the two pockets of cells meet the mesoderm is formed a complete layer of tissue right in between the endoderm and ectoderm layers This then leads to the formation of a coelom The stage of coelom formation starts with the gastrula as the archenteron forms pockets of migrating cells also form creating another layer between the endoderm and ectoderm the mesoderm These pockets gradually expand to form the coelom 5 See also editDeuterostome Development of the digestive system Developmental biology Embryology Embryonic development Ontogeny Protostome SchizocoelyReferences edit a b Luter Carsten 2000 06 01 The origin of the coelom in Brachiopoda and its phylogenetic significance Zoomorphology 120 1 15 28 doi 10 1007 s004359900019 ISSN 1432 234X S2CID 24929317 Bailly Anatole 1981 01 01 Abrege du dictionnaire grec francais Paris Hachette ISBN 2010035283 OCLC 461974285 Bailly Anatole Greek french dictionary online www tabularium be Retrieved 2020 03 05 a b Adoutte Andre Balavoine Guillaume Lartillot Nicolas Rosa Renaud de Adoutte Andre Balavoine Guillaume Lartillot Nicolas Rosa Renaud de 1999 03 01 Animal evolution the end of the intermediate taxa Trends in Genetics 15 3 104 108 doi 10 1016 S0168 9525 98 01671 0 ISSN 0168 9525 PMID 10203807 PAE Virtual Glossary Archived from the original on 2017 01 24 nbsp This developmental biology article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Enterocoely amp oldid 1158039625, wikipedia, wiki, book, books, library,
