What are the archenteron and the blastopore? What is the stage of the embryonic development in which these structures are formed?
1From which germ layer do the liver and the pancreas originate? What are other organs and tissues made from that germ layer?
1From which germ layer do blood cells originate? What are other organs and tissues made from that germ layer?
1
What is the cell division process directly related to the embryonic growth?
Define polyembryony?
What are the functions of umbilical cord?
How during gastrulation are the first two germ layers formed? Which are these germ layers?
Which hormones are produced by placenta?
What are the cells produced in the first stage of the embryonic development called?
How is the neural tube formed?
How is the notochord structure formed?
Explain animal pole?
What are the archenteron?
From which germ layer do the epidermis and the nervous system originate?
Explain archenteron?
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 is the germ layer from which the coeloms originate?
What are the three types of germ layers that form tissues and organs in animals?