After the blastula stage what is the following stage of the embryonic development? How is the passage from blastula to the next stage called?
5What is the function of the vitellus in the vertebrate egg? How are these eggs classified according to the amount of vitellus within them?
5What are the main substances transferred from the mother to the fetus through the placenta and from the fetus to the mother?
5What is the cell division during the first stage of the embryonic development called? How is this stage characterized?
5After the morula stage what is the next stage? What is the morphological feature that defines that stage?
5
Explain the morphology of an embryo from ventral to dorsal portion after neural stage?
What are the functions of placenta?
What is umbilical cord? And 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?
What are the destinations of the archenteron and of the blastopore?
How is the neural tube formed?
Explain animal pole?
From which germ layer do the liver and the pancreas originate? What are other organs and tissues made from that germ layer?
What is the chorioallantois membrane present in the embryonic development of reptiles and birds?
What is yolk sac?
From which germ layer do the liver and the pancreas originate?
What is coelom? To which structures do coeloms give birth?
What is the embryonic origin of the nervous system in vertebrates?
What are pleura?
What are the cells produced in the first stage of the embryonic development called?