A mucous cyst develops when the mouth’s salivary glands become plugged with mucus. While they’re usually temporary and painless, they can become permanent if not treated. What are mucous cysts?

[3] The nasal mucosa is protected by a secretory blanket with two layers: a deeper aqueous layer and a more superficial mucous layer. Entrapped particles are moved posteriorly toward the ...

The nose is lined with ciliated pseudostratified columnar epithelium in combination with goblet cells -- the so-called "respiratory epithelium." A mucous bilayer lines this epithelium, working ...