Embryology Flashcards
1
Q
What are the three stages of embryogenesis?
A
cleavage: division of zygote and formation of blastocyst
gastrulation: formation of germ layers
organogenesis: germ layers differentiate so as to give rise to all organs in the human body.
2
Q
what is the pre-embryonic period?
A
first 2 weeks; zygote becomes a spherical, multicellular structure.
3
Q
What is the fetal period?
A
weeks 9-38
fetus continues to grow
organs increase in complexity
