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From which germ layer do the epidermis and the nervous system originate? What are other organs and tissues made from that germ layer?
1What is the stage of the embryonic development in which these structures are formed? What are the destinations of the archenteron and of the blastopore?
1
From which germ layer do blood cells originate? What are other organs and tissues made from that germ layer?
What is the germ layer from which the coeloms originate?
What are histogenesis?
What is the function of the vitellus in the vertebrate egg?
To which structures do coeloms give birth? Are all animals coelomate?
What is placenta? What are its functions?
What is the function of the vitellus in the vertebrate egg? How are these eggs classified according to the amount of vitellus within them?
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 is polyembryony?
What is gastrulation? How during gastrulation are the first two germ layers formed?
What are the four initial stages of the embryonic development?
From which germ layer do blood cells originate?
What are somites?
Differentiate between amnion and chorion?
What are the animal pole and the vegetal pole of the vertebrate egg?
