Buchcover von Yolk Sac
Buchtitel:

Yolk Sac

Betascript Publishing (24.07.2010 )

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ISBN-13:

978-613-2-13136-2

ISBN-10:
6132131361
EAN:
9786132131362
Buchsprache:
Englisch
Klappentext:
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The yolk sac is a membranous sac attached to an embryo, providing early nourishment in the form of yolk in bony fishes, sharks, reptiles, birds, and primitive mammals. It functions as the developmental circulatory system of the human embryo, before internal circulation begins. It is the first element seen in the gestational sac during pregnancy, usually at 5 weeks gestation. It is a critical landmark, identifying a true gestation sac. It is reliably seen early in human pregnancy using ultrasound. The yolk sac is situated on the ventral aspect of the embryo; it is lined by extra-embyronic endoderm, outside of which is a layer of extra-embryonic mesenchyme, derived from the mesoderm.
Verlag:
Betascript Publishing
Webseite:
https://www.betascript-publishing.com/
Herausgegeben von:
Lambert M. Surhone, Miriam T. Timpledon, Susan F. Marseken
Seitenanzahl:
68
Veröffentlicht am:
24.07.2010
Lagerbestand:
Lieferbar
Kategorie:
Biologie
Preis:
1.026,89 NT$
Stichworte:
SAC, Embryo, Yolk, Erythropoiesis, Human Embryo

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