Fertilization & development
10 important questions on Fertilization & development
When does cleavage start?
What is the route of zygote during cleavage?
At a certain point the cells are very compact (can't distinguish the separate cells). What causes this?
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How can the 'compaction' of an embryo be prevented?
Where does the embryo arise from?
What are the functions of the extra-embryonic membrane?
- Role in implantation
- Supports embryo's growth
What is the result of hatching?
What do trophoblasts synthesize?
How does the inner cell mass form into a human being?
- Gastrulation
- Organogenesis
What is the status of the embryo in the second week?
- Two cell types present
- Two layers are formed
- Two cavities are formed: from which two of the extra-embryonic membranes are formed (4 in total)
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