Question

Respiratory epithelium, which lines the nasal cavity and upper respiratory tract, is classified as:

a. Simple columnar with cilia
b. Simple cuboidal with microvili
c. Simple columnar with cilia and goblet cells
d. Pseudostratified columnar with cilia and goblet cells
e. Pseudostratified columnar with microvili

Answer 1

d. Pseudostratified columnar with cilia and Goblet cells

Step-by-step explanation:

The respiratory epithelium located in the nasal cavity and upper respiratory tract has the role of humidification of the air and protection of the respiratory tract. This is why, the cells have cilia and also, there is a considerable amount of Goblet cells that produce mucus. This two factors help to prevent the entry of pathogens.