Glands within the lamina propria of the respiratory mucosa secrete
The lamina propria of the respiratory mucosa consists of which of the following connective tissues?
Microorganisms removed from incoming air by the mucus of the respiratory tract are ultimately exposed to and destroyed by
A)toxins in the mucus.
C)stomach acids and enzymes.
D)a lack of nutrients.
The nasal cavity opens into the nasopharynx at the