ectoderm的意思|ectoderm的解释-里氏词典

ectoderm ['ɛktə`dɚm]

n. 外胚层, 外层

[医] 外胚层

Ranging from100 to200 microns across, the width of several human hairs, these microscopic fossils are surprisingly complex and constitute almost a textbook example of a bilaterian, including the three major tissue layers( the endoderm, mesoderm and
这些微化石的大小为100~00微米，相当于几根头发的宽度，牠们看起来出奇复杂，而且简直就像两侧对称动物的教科书般，展示了各种特徵：包括三个主要的组织层（胚层、胚层及外胚层，都是中学生物课本中熟悉的名词）前后连接口部与肛门的肠腔，肠腔外还围绕著成对的体腔。

ectoderm

[ noun ]
the outer germ layer that develops into skin and nervous tissue
<noun.animal>

Ectoderm \Ec"to*derm\, n. [Ecto- + -derm.] (Biol.)
(a) The outer layer of the blastoderm; epiblast.
(b) The external skin or outer layer of an animal or plant,
this being formed in an animal from the epiblast. See
Illust. of {Blastoderm}.

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