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9 Cards in this Set

  • Front
  • Back
Stages of development
oocyte, zygote, blastomeres, morula, blastocyst
Cleavage produces what developmental structure?
Morula
After the zygote has undergone a series of divisions known as cleavage, a morula, composed of 12-16 cells is formed.
What process results in repeated divisions of the zygote, producing a large number of small cells called blastomeres that remain a cluster?
Cleavage
What developmental structure eventually gives rise to the placenta?
Trophoblast
The embryonic disc is comprised of what structures?
epiblast and hypoblast
During what process do epiblast cells invaginate at the primitive streak?
Gastrulation
Collectively, the endoderm, ectoderm, and mesoderm form what structure?
Trilaminar disc
What embryonic structure forms the body's first segments?
Somites
This structure lies between the somatic mesoderm and the splanchnic mesoderm and will eventually develop into the serous cavities of the ventral body cavity.
Coelom