LIFE SCIENCE

Detailed explanation-1: -Mucus lines the moist surfaces of your body like the lungs, sinuses, mouth, stomach, and intestines. Even your eyes are coated with a thin layer of mucus. It serves as a lubricant to keep tissues from drying out. It’s also a line of defense.

Detailed explanation-2: -The innate immune responses are the first line of defense against invading pathogens. They are also required to initiate specific adaptive immune responses. Innate immune responses rely on the body’s ability to recognize conserved features of pathogens that are not present in the uninfected host.

Detailed explanation-3: -The mucous membranes in the respiratory system protect us from pathogens and irritants as they become trapped in the secreted mucus.