What are the archenteron and the blastopore? What is the stage of the embryonic development in which these structures are formed?
1From which germ layer do the liver and the pancreas originate? What are other organs and tissues made from that germ layer?
1From which germ layer do blood cells originate? What are other organs and tissues made from that germ layer?
1
Genetically what are the two types of twins that can be generated?
Why can the allantois be considered an adaptation to terrestrial life?
What is the difference between amnion and chorion?
What is the chorioallantois membrane present in the embryonic development of reptiles and birds?
What is placenta? What are its functions?
How 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?
Which is the extra embryonic membrane whose function is to store nitrogen wastes of the embryo? Is this function present in placental mammalian embryos?
What is yolk sac?
Explain histogenesis?
What are the main substances transferred from the mother to the fetus through the placenta and from the fetus to the mother?
What is the embryonic origin of the nervous system in vertebrates?
What organogenesis?
What is coelom? To which structures do coeloms give birth?
What are somites?
What is the cell division during the first stage of the embryonic development called? How is this stage characterized?
