Embryonic development | Anatomy homework help

In a one to two page paper, give an overview of the embryonic stage of development. 

  • Describe the ectoderm, mesoderm, and endoderm and their associated structures. 
  • Discuss the structure and function of the embryonic disk. 
  • Describe embryo development and the role of chorionic villi. 
  • Include any environmental factors that may cause malformations in the developing embryo.