extraembryonic mesoderm


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Related to extraembryonic mesoderm: chorion, extraembryonic membranes

ex·tra·em·bry·on·ic mes·o·derm

extraembryonic cells that, although derived from the zygote, are not part of the embryo proper and contribute to the fetal membranes (for example, amnion).
Synonym(s): primary mesoderm

extraembryonic mesoderm

Mesoderm lying outside the embryo proper and involved in the formation of amnion, chorion, yolk sac, and body stalk.
See also: mesoderm