Question

question 43
which of the following tissues is found lining the respiratory passages and helps protect the lungs from dust particles?
a simple columnar
b pseudostratified columnar
c transitional
d simple cuboidal
e stratified squamous non - keratinized

Explanation:

Pseudostratified columnar epithelium lines the respiratory passages. It has cilia that sweep dust and debris away, protecting the lungs. Simple columnar is in digestive tracts. Transitional is in urinary organs. Simple cuboidal in glands/kidneys. Stratified squamous non - keratinized in moist linings (not respiratory for this protective cilia function).

Answer:

B. pseudostratified columnar