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 ?
Each larva is surrounded only by an embryonic membrane, which eventually breaks, releasing the veliger larva.
* Stage 4: mid-embryonic maturation; eye becomes pigmented; second antennae remain confined by the second embryonic membrane
The guinea pig (Cavia porcellus, Caviidae, Linnaeus, 1758) is a hystricomorph rodent, widely used as animal model for research development, especially that related to placentation (Miglino et al., 2004; Mess, 2007) and development of embryonic membranes (Oliveira et al., 2012; Vasconcelos et al., 2013), which have been studied by members of our research group.