oronasal membrane


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Related to oronasal membrane: intermaxillary segment, frontonasal process, Secondary palate

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.

oronasal

pertaining to the mouth and nose.

oronasal membrane
temporary partition replacing the nasal pit in the embryo; degenerates to open the passage from the nostril into the oronasal cavity.