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：

blastula    
n. 胞胚

胞胚

blastula
n 1: early stage of an embryo produced by cleavage of an ovum; a
liquid-filled sphere whose wall is composed of a single
layer of cells; during this stage (about eight days after
fertilization) implantation in the wall of the uterus
occurs [synonym: {blastula}, {blastosphere}]


请选择你想看的字典辞典：
单词字典翻译
blastula查看　blastula　在百度字典中的解释百度英翻中〔查看〕
blastula查看　blastula　在Google字典中的解释Google英翻中〔查看〕
blastula查看　blastula　在Yahoo字典中的解释Yahoo英翻中〔查看〕

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:


  • Blastulation - Wikipedia
    Blastulation is the stage in early animal embryonic development that produces the blastula In mammalian development, a blastula develops into the blastocyst with a differentiated inner cell mass and an outer trophectoderm
  • Blastula | Embryonic Development, Cell Division Gastrulation | Britannica
    blastula, hollow sphere of cells, or blastomeres, produced during the development of an embryo by repeated cleavage of a fertilized egg The cells of the blastula form an epithelial (covering) layer, called the blastoderm, enclosing a fluid-filled cavity, the blastocoel
  • What Is the Blastula? Definition, Structure Types
    In most animals, the blastula consists of an outer layer of cells surrounding a fluid-filled cavity After a sperm fertilizes an egg, the resulting single cell (the zygote) begins dividing rapidly in a process called cleavage These divisions don’t involve growth
  • 43. 5B: Cleavage, the Blastula Stage, and Gastrulation
    After the cleavage has produced over 100 cells, the embryo is called a blastula The blastula is usually a spherical layer of cells (the blastoderm) surrounding a fluid-filled or yolk-filled cavity (the blastocoel)
  • Blastula - Definition and Examples - Biology Online Dictionary
    A blastula is an early embryonic stage in various animal species that forms via cell division and differentiation post-fertilization It has a hollow, spherical shape containing a fluid-filled cavity known as the blastocoel
  • Cleavage and Blastula Stage | Biology for Majors II - Lumen Learning
    After the cleavage has produced over 100 cells, the embryo is called a blastula The blastula is usually a spherical layer of cells (the blastoderm) surrounding a fluid-filled or yolk-filled cavity (the blastocoel)
  • Blastula - an overview | ScienceDirect Topics
    The blastula is the first identifiable stage of early embryo development that is common to many animals, and consists generally of a hollow epithelial layer enclosing a fluid-filled cavity: the blastocoel
  • What is the Difference Between Blastula and Blastocyst
    Blastula refers to an animal embryo at the early stage of development when it is a hollow ball of cells whereas blastocyst refers to mammalian blastula in which some differentiation of cells has occurred
  • BLASTULA Definition Meaning - Merriam-Webster
    The meaning of BLASTULA is an early metazoan embryo typically having the form of a hollow fluid-filled rounded cavity bounded by a single layer of cells
  • Blastula - Biology Simple
    Blastula is an early embryonic stage in various animal species, characterized by the formation of a hollow ball of cells This stage marks an essential step in the process of embryonic development, laying the foundation for further differentiation and specialization





中文字典-英文字典  2005-2009