click below
click below
Normal Size Small Size show me how
Embryo Development
Embryology and Development
Question | Answer |
---|---|
Gametes | Sex cells |
Fertilization | The combination of male and female gametes (sex cells) |
Zygote | A fertilized egg |
Embryology | The study of developing embryos. |
Development | A series of events that give rise to a full grown organism. |
Embryo | A multicellular organism in the early stages of development. |
Differentiation | A series of changes that transforms unspecialized embryonic cells into specialized cells, tissues, and organs. |
Cleavage | Series of cell divisions by the zygote |
Morula | The first stage of development. Solid ball of cells undergoing cleavage. |
Blastula | Second Stage of development. |
Gastrula | The third stage of development. In this stage, cells on one side of the blastula move inward and form a multi-layered embryo with three germ layers. |
Germ Layers | Three distinct tissue layers that form during gastrulation. The three major germ layers are the endoderm, mesoderm and exoderm. |