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 is coelom? Are all animals coelomate?
What is placenta?
How is the yolk sac formed? What is the function of the yolk sac?
Explain archenteron?
What are pericardium?
How is the neural tube formed?
Explain blastopore?
Are all animals coelomate?
What are extra embryonic membranes?
Nmae extra embryonic membranes layers in vertebrates?
What is the chorioallantois membrane present in the embryonic development of reptiles and birds?
From which germ layer do the epidermis and the nervous system originate?
What is coelom? To which structures do coeloms give birth? Are all animals coelomate?
What are histogenesis?
What is the germ layer from which the coeloms originate?