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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
Explain vegetal pole?
In which type of animals does the placenta exist?
How are animals classified according to the germ layers present in their embryonic development?
What are histogenesis and organogenesis?
What organogenesis?
What is coelom?
Explain notochord?
What is yolk sac? How is it formed?
Which cells are produced in the first stage of embryonic development?
What are the archenteron and the blastopore? What is the stage of the embryonic development in which these structures are formed?
What are the archenteron and the blastopore?
What are the cells produced in the first stage of the embryonic development called?
What is notochord? How is this structure formed?
What are pleura?
What is the cell division during the first stage of the embryonic development called? How is this stage characterized?
