Mucus is a thick, slippery substance produced by mucous membranes in the body, primarily composed of water, electrolytes, and glycoproteins. It plays a vital role in the innate immune system by trapping pathogens and foreign particles, preventing them from entering the body and causing infection. Mucus also helps to keep mucous membranes moist and provides a protective barrier against harmful substances.
congrats on reading the definition of mucus. now let's actually learn it.