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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
How does the embryo turn from gastrula into neurula?
From which germ layer do the epidermis and the nervous system originate?
What is notochord?
What are the three types of germ layers that form tissues and organs in animals?
What are the main substances transferred from the mother to the fetus through the placenta and from the fetus to the mother?
After the blastula stage what is the following stage of the embryonic development? How is the passage from blastula to the next stage called?
What are the destinations of the archenteron and of the blastopore?
What are twins? Genetically what are the two types of twins that can be generated?
Why can the allantois be considered an adaptation to terrestrial life?
From which germ layer do the liver and the pancreas originate? What are other organs and tissues made from that germ layer?
How during gastrulation are the first two germ layers formed? Which are these germ layers?
Differentiate between amnion and chorion?
What is the function of the vitellus in the vertebrate egg? How are these eggs classified according to the amount of vitellus within them?
What are pleura?
In which type of animals does the placenta exist? What is its main function?
