An Entity of Type: Thing, from Named Graph: http://dbpedia.org, within Data Space: dbpedia.org

The extraembryonic membranes are four membranes which assist in the development of an animal's embryo. Such membranes occur in a range of animals from humans to insects. They originate from the embryo, but are not considered part of it. They typically perform roles in nutrition, gas exchange, and waste removal. The extraembryonic membranes in insects include a serous membrane originating from blastoderm cells, an amnion or amniotic cavity whose expression is controlled by the Zerknüllt gene, and a yolk sac. In humans and other mammals they are more usually called fetal membranes.

Property Value
dbo:abstract
  • The extraembryonic membranes are four membranes which assist in the development of an animal's embryo. Such membranes occur in a range of animals from humans to insects. They originate from the embryo, but are not considered part of it. They typically perform roles in nutrition, gas exchange, and waste removal. There are four standard extraembryonic membranes in birds, reptiles, and mammals: the yolk sac which surrounds the yolk, the amnion which surrounds and cushions the embryo, the allantois which among avians stores embryonic waste and assists with the exchange of carbon dioxide with oxygen as well as the resorption of calcium from the shell, and the chorion which surrounds all of these and in avians successively merges with the allantois in the later stages of egg development to form a combined respiratory and excretory organ called the chorioallantois. The extraembryonic membranes in insects include a serous membrane originating from blastoderm cells, an amnion or amniotic cavity whose expression is controlled by the Zerknüllt gene, and a yolk sac. In humans and other mammals they are more usually called fetal membranes. (en)
  • Una membrana extraembrionaria es una de las membranas que ayudan en el desarrollo del embrión. Dichas membranas se originan en el embrión, pero no se consideran parte de él. Por lo general estas desempeñan funciones en el proceso de nutrición, intercambio de gases y eliminación de desechos. ​ Además, estas se encuentran en una variedad de animales, desde humanos hasta insectos. Podemos hallar cuatro membranas extraembrionarias comunes en los pájaros, reptiles y mamíferos: el saco vitelino que rodea a la yema; el amnio que rodea y amortigua al embrión; el alantoides que, entre las aves, almacena los desechos embrionarios y ayuda durante el intercambio de gases (dióxido de carbono con el oxígeno), así como durante la reabsorción de calcio del revestimiento, y el corion que envuelve a todas las membranas anteriormente mencionadas, así mismo, en las aves se fusiona sucesivamente con el alantoides en las últimas etapas del desarrollo del huevo con el fin de crear un órgano tanto respiratorio como excretor llamado corioalantoide.​ (es)
dbo:wikiPageID
  • 54079041 (xsd:integer)
dbo:wikiPageLength
  • 2203 (xsd:nonNegativeInteger)
dbo:wikiPageRevisionID
  • 1119015397 (xsd:integer)
dbo:wikiPageWikiLink
dbp:wikiPageUsesTemplate
dcterms:subject
rdfs:comment
  • The extraembryonic membranes are four membranes which assist in the development of an animal's embryo. Such membranes occur in a range of animals from humans to insects. They originate from the embryo, but are not considered part of it. They typically perform roles in nutrition, gas exchange, and waste removal. The extraembryonic membranes in insects include a serous membrane originating from blastoderm cells, an amnion or amniotic cavity whose expression is controlled by the Zerknüllt gene, and a yolk sac. In humans and other mammals they are more usually called fetal membranes. (en)
  • Una membrana extraembrionaria es una de las membranas que ayudan en el desarrollo del embrión. Dichas membranas se originan en el embrión, pero no se consideran parte de él. Por lo general estas desempeñan funciones en el proceso de nutrición, intercambio de gases y eliminación de desechos. ​ Además, estas se encuentran en una variedad de animales, desde humanos hasta insectos. (es)
rdfs:label
  • Membrana extraembrionaria (es)
  • Extraembryonic membrane (en)
owl:sameAs
prov:wasDerivedFrom
foaf:isPrimaryTopicOf
is dbo:wikiPageWikiLink of
is foaf:primaryTopic of
Powered by OpenLink Virtuoso    This material is Open Knowledge     W3C Semantic Web Technology     This material is Open Knowledge    Valid XHTML + RDFa
This content was extracted from Wikipedia and is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported License