Uberon definition : The nasal fin is an epithelial seam that develops by fusion between the epithelial
linings of the medial and lateral nasal swellings. Shortly after its formation the
nasal fin regresses and is replaced by mesenchyme, with exception of its most posterior
portion which remains as the bucconasal membrane.;
The nasal fin is an epithelial seam that develops by fusion between the epithelial
linings of the medial and lateral nasal swellings. Shortly after its formation the
nasal fin regresses and is replaced by mesenchyme, with exception of its most posterior
portion which remains as the bucconasal membrane.