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yolk sac中文是什么意思

发音:  
用"yolk sac"造句"yolk sac"怎么读"yolk sac" in a sentence"yolk sac"的同义词

中文翻译手机手机版

  • 【生物学】卵黄囊。

例句与用法

  • The gonads form from a group of large granulated yolk sac cells which invacle the germinal ridges .
    性腺是由一群大的颗粒的卵黄囊细胞入缀生殖峭而形成。
  • Effects of potassium dichromate on lipid fluidity of cell membrane of yolk sac in rats
    重铬酸钾对卵黄囊细胞膜脂质流动性的影响
  • An endodermal sinus tumor ( yolk sac tumor ) of the testis is shown composed of primitive germ cells that form glomeruloid or embryonal - like structures
    睾丸的内胚层窦肿瘤(卵黄囊肿瘤)由原始生殖细胞构成,这些细胞形成血管球或胚芽样结构。
用"yolk sac"造句  

英文解释

  • membranous structure enclosing the yolk of eggs in birds, reptiles, marsupials, and some fishes; circulates nutrients to the developing embryo

  • membranous structure that functions as the circulatory system in mammalian embryos until the heart becomes functional
    同义词:vitelline sac, umbilical vesicle, vesicula umbilicus,

百科解释

The yolk sac is a membranous [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.
详细百科解释
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