extraembryonilisteks
Extraembryonic tissues are a collection of specialized structures that develop outside the embryo proper during the early stages of animal development. These tissues play crucial roles in supporting the embryo and facilitating its growth and survival. The term "extraembryonic" refers to the fact that these tissues are not part of the embryo itself but are derived from it.
One of the most well-known extraembryonic tissues is the yolk sac, which is present in many vertebrates.
In birds, the allantois is a significant extraembryonic tissue that helps in the excretion of waste products
Extraembryonic tissues are essential for the proper development and survival of the embryo. They provide support,