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 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 cell divisions that produce cells known as blastomeres.

Learn about human embryogenesis, from zygote formation to the development of germ layers and organ systems.

Dissecting the basic mechanisms that coordinate cell fate and tissue shape will generate an integrated understanding of early embryogenesis and new strategies for therapeutic intervention in early pregnancy loss. KEY WORDS: Human embryo, Morphogenesis, Cell fate, Embryonic stem cells, Aneuploidy, Polarisation.

2023年4月17日 · Human embryogenesis is a complicated process by which a fertilized egg develops into an embryo. During the first eight weeks of development, the conceptus shifts from a single-celled zygote into a multi-layered, multi-dimensional …

2023年8月3日 · Human embryogenesis refers to the development and formation of the human embryo. It encompasses the first eight weeks of development after fertilization, in which a single cell formed at fertilization turns into an organism with a multi-level body plan.

2022年8月22日 · Understand the formation and fate of the three embryonic germ layers (ectoderm, mesoderm, and endoderm) AND be able to list the general derivatives of each layer (Note: the neural crest is sometimes considered a "4th germ layer" but recall that it is derived from the neural plate and is therefore ultimately derived from ECTODERM.)

2024年6月19日 · Embryogenesis is the process of embryonic development occurring in the first eight weeks after fertilization. After implantation of the blastocyst in the endometrium, the embryo consists of the embryoblast and the trophoblast.

2019年11月15日 · Embryosis is the formation of an embryo. There are two main steps to this process: blastulation, and gastrolation. The begining of this process is the sperm and egg cell fusion to form a zygote. This is when the genetic material merges and all cells are pluripotent. Next there is clevage, compaction, and differentiation forming the blastocyte.

2024年2月5日 · Decreased expression of E-cadherin enables cell migration during embryogenesis. Facilitation of signaling molecules (e.g., retinoic acid) channel crossing to regulate gene activity. The FGF gene triggers the Fetal Growth of Fingers.