Describe the nasal cavity.

Question

Quizplus · Accepted Answer

The Answer is The nasal cavity extends back over the roof of the mouth. The anterior edge is lined with coarse nasal hairs that filter the coarsest matter from inhaled air. The remainder of the cavity is lined with ciliated mucous membrane that filters out dust and bacteria. Because of its rich blood supply, the nasal mucosa appears redder than the oral mucosa. The increased blood supply warms inhaled air. Kiesselbach's plexus is located in the anterior part of the septum, which divides the nasal cavity into two air passages. Kiesselbach's plexus is the most common site of nosebleeds. The superior, middle, and inferior turbinates increase the surface area of the nose so that more blood vessels and mucous membrane are available to warm, humidify, and filter the inhaled air. Under each turbinate is a cleft, the meatus, named for the turbinate above. The sinuses drain into the middle meatus and tears from the nasolacrimal duct drain into the inferior meatus.

Describe the Nasal Cavity