embryonic membrane


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fe·tal mem·brane

a structure or tissue that develops from the zygote but does not form part of the embryo proper.

embryonic membrane

fe·tal mem·brane

(fē'tăl mem'brān)
A structure (e.g., chorion) or tissue that develops from the zygote but does not form part of the embryo proper.
Synonym(s): embryonic membrane.

embryonic membrane

or

extraembryonic membrane

any of the protective membranes surrounding the developing embryo in animals, that are involved in the respiration and nutrition of the developing organism. They derive from the zygote, lie outside the embryo proper, and form the CHORION, ALLANTOIS, AMNION and YOLK SAC.
References in periodicals archive ?
Affected offspring were often released from the brood, chamber with embryonic membranes still intact and often exhibited characteristics of multiple stages of development (Figure 1D), indicating perturbations in the timing of development.