Embryonic Development
1. What is the cell division
process directly related to the
embryonic growth?
2. What is the function of the
vitellus in the vertebrate egg?
How are these eggs classified
according to the amount of
vitellus within them?
3. What are the animal pole
and the vegetal pole of the
vertebrate egg?
4. What are the four initial
stages of the embryonic
development?
5. What is the cell division
during the first stage of the
embryonic development
called? How is this stage
characterized?
6. What are the cells produced
in the first stage of the
embryonic development
called?
7. After the morula stage what
is the next stage? What is the
morphological feature that
defines this stage?
8. After the blastula stage
what is the following stage of
the embryonic development?
What is the passage from
blastula to the next stage
called?
9. What is gastrulation? How
during gastrulation are the
first two germ layers formed?
What are these germ layers?
10. 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?
11. How is the mesoderm
(third germ layer) of
triploblastic animals formed?
12. What are the three types
of germ layers that form
tissues and organs in animals?
13. How are animals classified
according to the germ layers
present in their embryonic
development?
14. How does the embryoturn
from gastrula intoneurula?
How is the neural tube
formed? What is the
embryonic origin of the
nervous system in
vertebrates?
15. What is the notochord?
How is this structure formed?
16. What is the coelom?To
which structures do coeloms
give birth? Are all animals
coelomate?
17. What is the germ layer
from which the coeloms
originate?
18. What are pleura,
pericardium and peritoneum?
19. After the neurula stage
and from its ventral portion to
the dorsal how can the
morphology of the embryo be
described?
20. What are somites?
21. What are histogenesis and
organogenesis?
22. From which germ layer do
the epidermis and the nervous
system originate? What are
other organs and tissues made
from that germ layer?
23. From which germ layer do
blood cells originate? What
are other organs and tissues
made from that germ layer?
24. From which germ layer do
the liver and the pancreas
originate? What are other
organs and tissues made from
that germ layer?
25. What are twins?
Genetically what are the two
types of twins that can be
generated?
26.What is polyembryony?