extra-embryonic

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• Extra-embryonic coelom — Extraembryonic coelom The extraembryonic coelom (or chorionic cavity) is shown between the two layers of extraembryonic mesoderm (labelled mes. ) in this image of an implanted embryo. Latin coeloma extraembryonicum …   Wikipedia

• Maternal effect dominant embryonic arrest — (Medea) is a selfish gene composed of a toxin and an antidote. A mother carrying Medea will express the toxin in her germline, killing her progeny. If the children also carry Medea, they produce copies of the antidote, saving their lives.… …   Wikipedia

• trophoblast — Extra embryonic layer of epithelium that forms around the mammalian blastocyst, and attaches the embryo to the uterus wall. Forms the outer layer of the chorion, and together with maternal tissue will form the placenta …   Dictionary of molecular biology

• animal development — Introduction  the processes that lead eventually to the formation of a new animal starting from cells derived from one or more parent individuals. Development thus occurs following the process by which a new generation of organisms is produced by …   Universalium

• Prenatal development — This article is about prenatal development of human embryos and fetuses. For other species, see prenatal development (non human). For maternal changes in the prenatal period, see Maternal physiological changes in pregnancy. Prenatal or antenatal… …   Wikipedia

• human embryology — ▪ biology Introduction       the process encompassing the period from the formation of an embryo, through the development of a fetus, to birth.       The human body, like that of most animals, develops from a single cell produced by the union of… …   Universalium

• reproductive system, animal — Introduction       any of the organ systems by which animals reproduce.       The role of reproduction is to provide for the continued existence of a species; it is the process by which living organisms duplicate themselves. Animals compete with… …   Universalium

• Stem cell — Mouse embryonic st …   Wikipedia

• Embryo drawing — refers to any representation of the illustration of embryos in their developmental sequence. In plants and animals, an embryo develops from a zygote, the single cell that results when an egg and sperm fuse during fertilization. In animals, the… …   Wikipedia

• Amnion — Infobox Anatomy Name = Amnion Latin = GraySubject = 12 GrayPage = 56 Caption = Surface view of embryo of Hylobates concolor. Caption2 = Human fetus, enclosed in the amnion. System = MeshName = Amnion MeshNumber = A10.615.284.277 : For the alien… …   Wikipedia

• genetic disease, human — Introduction       any of the diseases and disorders that are caused by mutations in one or more genes (gene).       With the increasing ability to control infectious and nutritional diseases in developed countries, there has come the realization …   Universalium