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
Nmae extra embryonic membranes layers in vertebrates?
Classify the animals based on the germ layers in their embryonic development?
Explain coeloms.
In which type of animals does the placenta exist? What is its main function?
To which structures do coeloms give birth?
What is gastrulation? How during gastrulation are the first two germ layers formed? Which are these germ layers?
Differentiate between amnion and chorion?
What are somites?
What is the function of the umbilical cord?
Which hormones are produced by placenta?
What is coelom? To which structures do coeloms give birth?
What is notochord?
How is the yolk sac formed?
What is the chorioallantois membrane present in the embryonic development of reptiles and birds? How does this membrane participate in the energetic metabolism of the embryo?
How during gastrulation are the first two germ layers formed? Which are these germ layers?
