yolk sac
导读：单词音标
yolk sac
汉语翻译卵黄囊【医】 卵黄囊英语解释名词 yolk sac:membranous structure that functions as the circulatory system in mammal embryos until the hea
yolk sac
汉语翻译卵黄囊【医】 卵黄囊英语解释名词 yolk sac:membranous structure that functions as the circulatory system in mammal embryos until the hea
单词音标
yolk sac
汉语翻译
卵黄囊
【医】 卵黄囊
英语解释
名词 yolk sac:
membranous structure that functions as the circulatory system in mammal embryos until the heart becomes functional同义词：vitelline sac, umbilical vesicle, vesicula umbilicus
membranous structure enclosing the yolk of eggs in birds reptiles marsupials and some fishes; circulates nutrients to the developing embryo
