Mucous membranes prevent most pathogens from entering the body because of the stickiness of the mucus and the presence of lysozymes.

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Mucous membranes, such as those in the respiratory and digestive systems, produce mucus which is sticky and traps pathogens before they can enter the body. Additionally, lysozymes, which are enzymes found in tears, saliva, and mucus, help to break down the cell walls of bacteria and other pathogens, further preventing them from entering the body.

Mucous Membranes Prevent Most Pathogens from Entering the Body Because