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What are the archenteron and the blastopore? What is the stage of the embryonic development in which these structures are formed? What are the destinations of the archenteron and of the blastopore?
5After the neurula stage and from its ventral portion to the dorsal how can the morphology of the embryo be described?
5What is gastrulation? How during gastrulation are the first two germ layers formed? Which are these germ layers?
5Which is the extra embryonic membrane whose function is to store nitrogen wastes of the embryo? Is this function present in placental mammalian embryos?
5What is the chorioallantois membrane present in the embryonic development of reptiles and birds? How does this membrane participate in the energetic metabolism of the embryo?
5How does the embryo turn from gastrula into neurula? How is the neural tube formed? What is the embryonic origin of the nervous system in vertebrates?
5
Differentiate between amnion and chorion?
What is placenta? What are its functions?
What are the archenteron and the blastopore? What are the destinations of the archenteron and of the blastopore?
Where do liver and pancreas originate from?
Explain the embryonic development stages after formation of blastula?
What are the cells produced in the first stage of the embryonic development called?
What are peritoneum?
What is coelom? To which structures do coeloms give birth? Are all animals coelomate?
How is the notochord structure formed?
Why can the allantois be considered an adaptation to terrestrial life?
From which germ layer do the epidermis and the nervous system originate?
What are the archenteron?
What is gastrulation? How during gastrulation are the &rst two germ layers formed? Which are these germ layers?
How yolk sac is formed?
Which cells are produced in the first stage of embryonic development?
