Mucous cells are specialized cells found in various tissues, including the lining of the gastrointestinal tract and respiratory system. Their primary function is to produce and secrete mucus, a thick, slippery substance that helps protect and lubricate surfaces. Mucus plays a crucial role in trapping pathogens and particles, aiding in digestion, and maintaining moisture in the airways. These cells are typically located in goblet cells and mucous glands, where they contribute to the overall health of the tissues they inhabit. By producing mucus, mucous cells help prevent irritation and damage from environmental factors, ensuring proper functioning of the organs they support.