TED-Ed: How mucus keeps us healthy - Katharina Ribbeck

Mucus is a vital substance produced by the body, covering wet surfaces like eyes, nose, and lungs. It serves multiple functions, such as protecting tissues, lubricating eyes, and shielding the stomach lining. Mucus contains mucins, which are glycoproteins that help it stay hydrated and form barriers against pathogens. It acts as the body's first defense line, preventing harmful bacteria from forming biofilms. During infections, mucus production increases to flush out pathogens, aided by white blood cells. Despite its association with illness, mucus supports beneficial bacteria that aid in health maintenance. Overall, mucus is essential for keeping the body healthy and protected.

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