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- Human_embryogenesis abstract "Human embryogenesis is the process of cell division and cellular differentiation of the embryo that occurs during the early stages of development. In biological terms, human development entails growth from a one celled zygote to an adult human being. Fertilisation occurs when the sperm cell successfully enters and fuses with an egg cell (ovum). The genetic material of the sperm and egg then combine to form a single cell called a zygote and the germinal stage of prenatal development commences. Embryogenesis covers the first eight weeks of development and at the beginning of the ninth week the embryo is termed a fetus.Human embryology is the study of this development during the first eight weeks after fertilisation. The normal period of gestation (pregnancy) is nine months or 38 weeks.The germinal stage, refers to the time from fertilization, through the development of the early embryo until implantation is completed in the uterus. The germinal stage takes around 10 days.During this stage, the zygote, which is defined as an embryo because it contains a full complement of genetic material, begins to divide, in a process called cleavage. A blastocyst is then formed and implanted in the uterus. Embryogenesis continues with the next stage of gastrulation when the three germ layers of the embryo form in a process called histogenesis, and the processes of neurulation and organogenesis follow. The embryo is referred to as a fetus in the later stages of prenatal development, usually taken to be at the beginning of the ninth week. In comparison to the embryo, the fetus has more recognizable external features, and a more complete set of developing organs. The entire process of embryogenesis involves coordinated spatial and temporal changes in gene expression, cell growth and cellular differentiation. A nearly identical process occurs in other species, especially among chordates.".
- Human_embryogenesis thumbnail HumanEmbryogenesis.svg?width=300.
- Human_embryogenesis wikiPageExternalLink indexen.html.
- Human_embryogenesis wikiPageExternalLink womb.
- Human_embryogenesis wikiPageExternalLink stem_blastocyst.jpg.
- Human_embryogenesis wikiPageID "12276398".
- Human_embryogenesis wikiPageRevisionID "606743151".
- Human_embryogenesis hasPhotoCollection Human_embryogenesis.
- Human_embryogenesis subject Category:Developmental_biology.
- Human_embryogenesis subject Category:Embryology.
- Human_embryogenesis comment "Human embryogenesis is the process of cell division and cellular differentiation of the embryo that occurs during the early stages of development. In biological terms, human development entails growth from a one celled zygote to an adult human being. Fertilisation occurs when the sperm cell successfully enters and fuses with an egg cell (ovum). The genetic material of the sperm and egg then combine to form a single cell called a zygote and the germinal stage of prenatal development commences.".
- Human_embryogenesis label "Embriogénesis humana".
- Human_embryogenesis label "Embriologia umana".
- Human_embryogenesis label "Embryogenèse humaine".
- Human_embryogenesis label "Human embryogenesis".
- Human_embryogenesis label "Эмбриология человека".
- Human_embryogenesis sameAs Embryonální_vývoj_člověka.
- Human_embryogenesis sameAs Embriogénesis_humana.
- Human_embryogenesis sameAs Embryogenèse_humaine.
- Human_embryogenesis sameAs Embriologia_umana.
- Human_embryogenesis sameAs m.02vym2z.
- Human_embryogenesis sameAs Q964797.
- Human_embryogenesis sameAs Q964797.
- Human_embryogenesis wasDerivedFrom Human_embryogenesis?oldid=606743151.
- Human_embryogenesis depiction HumanEmbryogenesis.svg.
- Human_embryogenesis isPrimaryTopicOf Human_embryogenesis.