Question

The air passages of the respiratory system are lined with.

a. A serous membrane
b. A mucous membrane
c. The plasma
d. a and c
e. The correct answer is't given

Answer 1

b. A mucous membrane

Step-by-step explanation:

The respiratory system is lined with a mucous membrane that secretes mucus. The mucus traps smaller particles like pollen or smoke. Hairlike structures called cilia line the mucous membrane and move the particles trapped in the mucus out of the nose.