10 Questions
What was the main reason for the enlargement of the mesometrial decidua?
Increased vascularity and proliferation of decidual cells
What happened to the primary decidual zone cells at this stage?
Most of them disappeared
How many separate cavities does the embryo have at this stage?
Three
What is the name of the zone that becomes well-defined by the progressive development of the lateral sinusoids?
Compact zone
What is the effect of RA on the formation of blood sinusoids in the implantation site?
It inhibits the formation of blood sinusoids
What is the consequence of RA treatment on the embryos?
They exhibit growth retardation and defective development
What is the morphology of the implantation site in the RA-treated group?
Circular in transverse section and smaller than in control
What cavities fail to form in the RA-treated group?
Only the exocoelom and ectoplacental cavities
What is the unit of measurement for the scale bar in figure A&B?
Micrometer (μm)
At what stage of development were the observations made?
GD 7.5
Learn about the formation of compact zone, lateral decidual zones, and decidual capsular zone during embryonic development. Understand the development of embryonic cavities, including amniotic cavity, exocoelom, and ectoplacental cleft.
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