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Which tissues will contribute to the chorion?

I have an exercise asking me to choose two letters (from this diagram: http://bayimg.com/iAlPHAAeL) that indicate the layers that will contribute to the chorion.

As far as I understand, the chorion consists of the extraembryonic mesoderm and the trophoblast.

My issue is I can't see any extraembryonic mesoderm on this diagram...?

Any help would be great!

Thanks in advance.

1 Answer

Relevance
  • 8 years ago
    Favorite Answer

    Ecto-mesoderm

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