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
Are all animals coelomate?
Which is the extra embryonic membrane whose function is to store nitrogen wastes of the embryo?
What is the embryonic origin of the nervous system in vertebrates?
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?
Explain foetal pole?
Differentiate between amnion and chorion?
Explain pleura?
What is the difference between amnion and chorion?
How during gastrulation are the first two germ layers formed?
What are other organs and tissues made from that germ layer?
Why can the amnion also be considered an adaptation to terrestrial life?
Explain peritoneum?
Explain gastrulation? What stage follows gastrulation?
How is the yolk sac formed?
Explain histogenesis?
