bucconasal membrane

buc·co·na·sal mem·brane

a thin, transient epithelial sheet separating the primordial nasal cavity from the stomodeum in the 7-week-old human embryo.
Synonym(s): oronasal membrane

oronasal membrane

An embryonic structure that separates the olfactory pit from the primitive buccal cavity at the 6th week of development, which disappears to mark the site of the posterior naris.

buc·co·na·sal mem·brane

(bŭkō-nāzăl membrān)
Thin, transient epithelial sheet separating the primordial nasal cavity from the stomodeum in the 7-week-old human embryo.
Synonym(s): oronasal membrane.
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References in periodicals archive ?
The resulting bucconasal membrane, consisting of a layer each of ectoderm and endoderm, separates the two compartments.