The inner walls of the primary bronchus are lined with:
a. Ciliated mucosa only
b. Neither ciliated mucosa nor goblet cells
c. Goblet cells only
d. Both ciliated mucous and goblet cells
Answer: D
The inner walls of the primary bronchus are lined with:
a. Ciliated mucosa only
b. Neither ciliated mucosa nor goblet cells
c. Goblet cells only
d. Both ciliated mucous and goblet cells