2014年6月1日 · Chapter 1 discusses general embryology, and covers embryogenesis, chronology of the development of the embryo, respiratory system, gastrointestinal system, urogenital system, reproductive system, and the placenta and fetal membranes.
2015年11月13日 · During the first two weeks of development, the fertilized egg undergoes cell division through cleavage to form a blastocyst. The blastocyst implants in the uterine wall and begins to develop two cell layers - the outer trophoblast and inner cell mass. The trophoblast layer further separates into cytotrophoblast and syncytiotrophoblast.
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.
General Embryology Embryology: Processes and events involved from the fertilization up to child birth. Developmental Anatomy: Processes involved from fertilization to structural & functional maturity of organs / viscera / systems of human body. Clinical Embryology: That knowledge of embryology which is useful in the understanding and
GENERAL EMBRYOLOGY •An intricate and miraculous process by which a single cell gives rise to a highly developed multicellular human being. •A continuous process that begins when an oocyte (ovum) is fertilized by a sperm to form a zygote which differentiates in to definitive organ system and thereafter in to their early functional stage.
2012年2月3日 · GENERAL EMBRYOLOGY. GASTRULATION NOTOCHORD FORMATION. Learning Objectives. To learn about the process of differentiation of embryoblast into bilaminar germ disc. … Early differentiation of trophoblast to form extra embryonic mesoderm and chorionic villi … Formation of amniotic cavity...
GENERAL EMBRYOLOGY . Early embryonic development -Ovulation: Release of ovum from the ovary to the fallopian tube (details later) -Fertilization: Occur in the ampulla of the fallopian tube (Day 0) -Zygote formation: Sperm (1N) + ovum (1N) = zygote (2N) (Day 1) -Morula formation: due to mitotic division of the zygote (Day 4) -Blastocyst formation: