英文字典中文字典


英文字典中文字典51ZiDian.com



中文字典辞典   英文字典 a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z       







请输入英文单字，中文词皆可：

安装中文字典英文字典查询工具!


中文字典英文字典工具:
选择颜色:
输入中英文单字

































































英文字典中文字典相关资料:


  • ALLANTOIS Definition Meaning - Merriam-Webster
    The meaning of ALLANTOIS is a vascular fetal membrane of reptiles, birds, and mammals that is formed as a pouch from the hindgut and that in placental mammals is intimately associated with the chorion in formation of the placenta
  • Allantoic Fluid - an overview | ScienceDirect Topics
    Allantoic fluid is defined as the fluid that accumulates in the allantoic sac, containing nutrients such as glucose, fructose, amino acids, electrolytes, proteins, hormones, and growth factors, which serve as metabolic substrates for the conceptus
  • Pathology Outlines - Embryonic remnants
    Allantoic, vitelline duct and embryonic vascular remnants typically have no gross findings; in rare cases, a cyst can be associated with the remnant and grossly appreciable in the umbilical cord
  • ALLANTOIC definition and meaning | Collins English Dictionary
    ALLANTOIC definition: of or in the allantois | Meaning, pronunciation, translations and examples
  • Allantois Definition, Function Structure - Lesson | Study. com
    In some animals, as the embryo grows, the allantois forms an allantoic sac that serves as a reservoir for proteins, carbohydrates, electrolytes, and hormones used by the growing fetus
  • Allantois - MeSH - NCBI
    An extra-embryonic membranous sac derived from the YOLK SAC of REPTILES; BIRDS; and MAMMALS It lies between two other extra-embryonic membranes, the AMNION and the CHORION The allantois serves to store urinary wastes and mediate exchange of gas and nutrients for the developing embryo Year introduced: 1991 (1975) Restrict to MeSH Major Topic
  • ALLANTOIC Definition Meaning | Dictionary. com
    Allantoic definition: of or relating to the allantois See examples of ALLANTOIC used in a sentence
  • Allantois - an overview | ScienceDirect Topics
    The allantoic vesicle connects to the urinary system and in some species, such as the sheep, is a receptacle for fetal urine In others, such as rodents, the vesicle may be reduced or absent The allantois has an inner layer of endoderm, usually a simple epithelium, and an outer layer of mesoderm
  • Chorioallantoic membrane - Wikipedia
    Finally the allantoic epithelium serves a barrier to the allantoic cavity, and acts in a selectively permeable manner by permitting the absorption of water and electrolytes, as well as maintains a barrier against the toxins and waste materials stored inside the allantoic cavity





中文字典-英文字典  2005-2009