This is often the most confusing week for students. Berry uses his signature flowchart method to differentiate the cytotrophoblast from the syncytiotrophoblast, and explains the formation of the amniotic cavity and the yolk sac.
An Introduction to Embryology A.K. Berry is a core textbook used primarily by undergraduate students (B.Sc. Zoology) to understand the fundamental processes of animal development. While the full text is copyrighted and typically available through academic retailers like Amazon India Sapna Online an introduction to embryology by ak berry pdf
The book follows a chronological and thematic approach to developmental biology: This is often the most confusing week for students