Nasal Cavity:The nasal cavity is a large air-filled space above and behind the nose in the middle of the face, involved in breathing and smell.
Mucous Membrane: A mucous membrane is a layer of epithelial tissue that lines various cavities in the body and covers internal organs, secreting mucus for protection and lubrication.
Cilia:Cilia are tiny, hair-like structures on the surface of cells that move in wave-like motions to transport particles or mucus, playing a critical role in keeping airways clear