Embryogeny

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Embryogeny

Embryogeny (/ɛmˈbraɪ.əˌdʒɛn.i/), from the Greek words "embryo" (meaning young one) and "genesis" (meaning origin), refers to the process of formation and development of an embryo from the fertilization of the ovum until the fetus stage.

Etymology

The term "Embryogeny" is derived from the Greek words "embryo" (ἔμβρυον), meaning "young one", and "genesis" (γένεσις), meaning "origin".

Process

Embryogeny begins with the process of fertilization, where a sperm cell from a male merges with an ovum from a female to form a single cell called a zygote. This zygote then undergoes a series of divisions, known as cleavage, to form a multi-cellular structure called a blastula. The blastula then undergoes gastrulation, forming a gastrula with different layers of cells that will eventually form the different tissues and organs of the organism. This is followed by the process of organogenesis, where the different organs of the organism start to form.

Related Terms

  • Zygote: The single cell formed by the fusion of a sperm and an ovum during fertilization.
  • Blastula: The multi-cellular structure formed by the zygote after undergoing cleavage.
  • Gastrula: The structure formed by the blastula after undergoing gastrulation, with different layers of cells that will eventually form the different tissues and organs of the organism.
  • Organogenesis: The process where the different organs of the organism start to form from the gastrula.

See Also

External links

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