Multiple choice The epithelium lining of the nasal mucosa is mainly stratified squamous simple columnar epithelial ciliated columnar epithelial olfactory epithelium cuboidal stratified tissue Reveal answer Fill a bubble to check yourself C Correct answer Explanation Squamous epithelium lines a small part of the entrance to the nasal cavity. Cilia help maintain the ‘mucus blanket’ that protects the nasal mucosa.