Key Points This chapter presents the concepts and timing of embryonic development. The problems of using staging systems to describe a continuous process are discussed. The method behind staging of animal development is presented. A revision of the timing of…
Key Points This chapter describes the tissue types present in early embryos and the interactions between these tissues. The membrane systems and cytoskeletal elements within a typical cell are reviewed. Early embryos contain only epithelial and mesenchymal populations. Each tissue…
Key Points This chapter considers the language used within embryological research and how it is evolving. The terms used to describe embryos, cells and tissues derive from the social constructs of science during the time they were created. Newer terms…