Question

which part protects the trachea

Answer 1

The trachea serves as passage for air, moistens and warms it while it passes into the lungs, and protects the respiratory surface from an accumulation of foreign particles. Thetrachea is lined with a moist mucous-membrane layer composed of cells containing small hairlike projections called cilia.

Answer 2

hey mate here is ur ans___
it is lined by a moist moucous membtane which is composed of cells and have hair like projections called cilia .


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