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胚胞

胚胞
着床前的胚胞
人胚胞,內細胞群在右上方
基本信息
卡内基分期英语CarnegieStage3
Days5–9
发育自桑葚胚
发育为原腸胚
标识字符
拉丁文Blastocystis
MeSHD001755
TE英语Terminologia EmbryologicaE2.0.1.2.0.0.12
FMAFMA:83041
解剖學術語

胚胞[1][2](blastocyst)又称胚泡[3],是特指哺乳動物受精卵卵裂的過程中所形成的球形囊泡狀幼胚;胚胞由桑葚胚中央出腔形成。胚胞結構由內細胞群(inner cell mass, ICM)、滋養層(trophoblast, TE)以及胚胞腔[4](blastocyst cavity)組成。在非哺乳動物中,由于此同階段的對等構造是一種由未分化的細胞球組成的結構,汉语使用术语 囊胚,而英语改用 blastula。

內細胞群有發育成成體各種結構的潛能,而滋養層則能發育爲胚胎外的組織,如胎盤等。分離內細胞群細胞,並進行體外培養,即可取得胚胎幹細胞(ESC)[5][6]

英语 blastocyst 源于古希腊语 βλαστός (blastós,blasto-) 义为“起源、芽、苗、幼枝”(a germ, bud, sprout, shoot),以及 κύστις (kústis,-cyst)义为“解剖囊”(anatomical sac)[7]

參見

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參考

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  1. ^ https://terms.naer.edu.tw/detail/006d84194101fd33a2c64a11b1efa974/?startswith=zh&seq=27257
  2. ^ 存档副本. [2024-02-22]. (原始内容存档于2024-02-22). 
  3. ^ 存档副本. [2024-02-22]. (原始内容存档于2024-02-22). 
  4. ^ 存档副本. [2024-02-22]. (原始内容存档于2024-02-22). 
  5. ^ Tarik Regad; et al. Principles of Stem Cell Biology and Cancer. Wiley Blackwell. 2015: 3–5. ISBN 978-1-118-67062-0. 
  6. ^ Harvey Lodish; et al. Chapter 21. Molecular Cell Biology (7th edition). Macmillan Higher Education. 2013: 979–983. ISBN 978-1-4641-0981-2. 
  7. ^ 存档副本. [2024-02-22]. (原始内容存档于2024-02-22). 
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胚胞
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