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妊娠 |
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胚胎與胎兒發育
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隨著受精卵發育成誕生時所見到的寶寶，受精卵要經歷三個主要的發育時期：1.受精卵期（植入前期）；2.胚胎時期（妊娠早期）；3胎兒期（妊娠晚期）。因為受精卵期已經在“懷孕”一節裏討論過，現在轉到討論這個新生命有機體是怎樣在子宮內發育的。 |
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Pregnancy |
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Development of Embryo and Fetus
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As the fertilized egg develops into the baby we see at birth, it goes through three main stages of growth: 1. the stage of the
zygote (before implantation), 2. the stage of the
embryo (early in the pregnancy), and 3. the stage of the
fetus (later in the pregnancy). Since the first of these stages has already been discussed under "Conception", we now turn to a description of how the new organism grows inside the uterus. |
