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
What are the blastopore?
What are pleura, pericardium, and peritoneum?
Are the extra embryonic membranes the same in all vertebrates?
Explain histogenesis?
What are somites?
What is the stage of the embryonic development in which these structures are formed?
To which structures do coeloms give birth? Are all animals coelomate?
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?
What are histogenesis?
From which germ layer do blood cells originate? What are other organs and tissues made from that germ layer?
What is the embryonic origin of the nervous system in vertebrates?
What are pericardium?
In which type of animals does the placenta exist?
What is yolk sac? How is it formed?
Explain blastopore?