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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 animal pole?
What is the function of the yolk sac?
After the neurula stage and from its ventral portion to the dorsal how can the morphology of the embryo be described?
What is coelom? To which structures do coeloms give birth? Are all animals coelomate?
Explain the difference between amnion and chorion?
To which structures do coeloms give birth? Are all animals coelomate?
Which is the extra embryonic membrane whose function is to store nitrogen wastes of the embryo? Is this function present in placental mammalian embryos?
How is the neural tube formed? What is the embryonic origin of the nervous system in vertebrates?
Explain coeloms. From which germ layer does it originate?
Which hormones are produced by placenta?
What are the functions of umbilical cord?
What are the functions of placenta?
What is the difference between amnion and chorion?
What is coelom? Are all animals coelomate?
What is gastrulation?
