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In Human Anatomy and Physiology
What is mucus?
Mucus is that green stuff inside your nose. It's also inside yourthroat-it's there to (hopefully) stop viruses, bacteria andanything else that may start a disease getting insi…de your body.You swallow it and they get destroyed in the stomach. Mucus is theslimy matter secreted by your mucous membranes to providelubrication and protection from germs. An example is the mucus inyour nose. Mucus as in mucus plug, and mucus membrane. (MORE)