The Respiratory Mucosa Consists Of

Question

The respiratory mucosa consists of
A) epithelium and underlying layer of areolar tissue.
B) dense irregular connective and adipose tissue.
C) ciliated stratified squamous and columnar cells.
D) fibrocartilage and mucous cells.
E) dense regular connective and areolar tissue.

Accepted Answer

The respiratory mucosa is a specialized mucous membrane that lines the respiratory tract from the nasal cavity to the bronchioles. It is composed of two layers: an epithelial layer and an underlying layer of areolar tissue. The epithelial layer varies depending on the location in the respiratory tract but can include ciliated pseudostratified columnar cells, stratified squamous cells, or simple squamous cells. The underlying layer of areolar tissue contains numerous glands, blood vessels, and lymphatic vessels.