An embryo is the initial stage of development for a multicellular organism.In organisms that reproduce sexually, embryonic development is the part of the life cycle that begins just after fertilization of the female egg cell by the male sperm cell.The resulting fusion of these two cells produces a single-celled zygote that undergoes many …

Human embryonic development or human embryogenesis is the development and formation of the human embryo.It is characterised by the processes of cell division and cellular differentiation of the embryo that occurs during the early stages of development. In biological terms, the development of the human body entails growth from a one-celled zygote to an adult human being.

2023年4月12日 · With each week of pregnancy, your baby-to-be is developing in leaps and bounds. In the early stages, they are called a zygote. They then progress to an embryo, fetus, and finally, baby.

embryo翻译：胚，胚胎。了解更多。 示例中的观点不代表剑桥词典编辑、剑桥大学出版社和其许可证颁发者的观点。

Middle English embrioun "embryo, fetus," borrowed from Medieval Latin embrion-, embrio, embryo, borrowed from Greek émbryon "newborn creature (in reference to a lamb), young, embryo or fetus," from em-em-+ -bryon, derivative of bry-, stem of brýein "to swell with an abundance of growth, bloom, abound," of obscure origin

The embryo is an early developmental stage of animals. In humans the embryo begins to develop about four days after an egg is fertilized. Appearing initially as a tiny mass of cells, it eventually gives rise to the fetus, an obvious human form.

2023年8月13日 · Biology definition: An embryo is the stage of early development after fertilization up to the phase of initial organogenesis. It may also pertain to the multicellular organism itself that undergoes extensive and rapid growth and cell differentiation during the early stage of development. In humans, the embryonic stage spans after the zygote phase (at fertilization) to approximately the eighth ...

4 天之前 · embryo, the early developmental stage of an animal while it is in the egg or within the uterus of the mother. In humans the term is applied to the unborn child until the end of the seventh week following conception; from the eighth week the unborn child is called a fetus.. A brief treatment of embryonic development follows. For full treatment, see morphology: Embryology.

2017年7月6日 · An embryo refers to the early developmental stage of eukaryotic organisms following the fertilization of an egg (derived from a female) by sperm (derived from a male) as a method of sexual reproduction.

Ez a lap egy ellenőrzött változata Ez a közzétett változat , ellenőrizve: 2024. április 27. Pontosság ellenőrzött Az emberi embrió körülbelül a terhesség 8. hetében A embrió (vagy régiesen ébrény ) az emlősállatok és az ember ivadéka a méhen belüli fejlődés korai szakaszában. Az embernél a 8. hétig (a test és a fő szervrendszerek kialakulásáig) nevezik ...