翻訳と辞書 Words near each other ・ Vitiello ・ Vitier ・ Vitiges ・ Vitiges (horse) ・ Vitigudino ・ Vitiligo ・ Vitelli ・ Vitellia (ancient Latin town) ・ Vitellia (gens) ・ Vitellidelos ・ Vitellidelos dulcis ・ Vitelliform macular dystrophy ・ Vitellin ・ Vitelline ・ Vitelline arteries ・ Vitelline circulation ・ Vitelline duct ・ Vitelline masked weaver ・ Vitelline membrane ・ Vitelline membrane outer layer protein I (VMO-I) ・ Vitelline veins ・ Vitelline warbler ・ Vitellius ・ Vitello (crater) ・ Vitello tonnato ・ Vitellogenesis ・ Vitellogenin ・ Vitellogenin lipid transport domain ・ Vitellozzo Cardinal Vitelli ・ Vitellozzo Vitelli Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Vitelline circulation ： ウィキペディア英語版 Vitelline circulation Vitelline circulation refers to the system of blood flowing from the embryo to the yolk sac and back again. The yolk-sac is situated on the ventral aspect of the embryo; it is lined by endoderm, outside of which is a layer of mesoderm. It is filled with fluid, the vitelline fluid, which possibly may be utilized for the nourishment of the embryo during the earlier stages of its existence. Blood is conveyed to the wall of the sac by the vitelline arteries (a branch of the dorsal aorta), and after circulating through a wide-meshed capillary plexus, is returned by the vitelline veins to the tubular heart of the embryo. This constitutes the vitelline circulation, and by means of it nutritive material is absorbed from the yolk-sac and conveyed to the embryo. ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Vitelline circulation」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.