Question

trachea is internally lined with​

Answer 1

Answer:

Cartilage. Please mark me as brainlist.

Answer 2

Answer:

The trachea is lined with a moist mucous-membrane layer composed of cells containing small hairlike projections called cilia. The cilia project into the channel (lumen) of the trachea to trap particles. There are also cells and ducts in the mucous membrane that secrete mucus droplets and water molecules.

Explanation:

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