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
When are archenteron and blastopore formed?
What are the extra embryonic membranes present in vertebrates?
What is polyembryony?
After the neurula stage and from its ventral portion to the dorsal how can the morphology of the embryo be described?
What are the destinations of the archenteron and of the blastopore?
What are the archenteron and the blastopore?
Where do liver and pancreas originate from?
What are the cells produced in the first stage of the embryonic development called?
Which cells are produced in the first stage of embryonic development?
What are pleura?
Explain monozygotic and dizygotic twins?
Explain foetal pole?
What is the function of the yolk sac?
What is coelom?
What are the archenteron and the blastopore? What are the destinations of the archenteron and of the blastopore?