First Line of Defense
Skin: Forms a physical barrier between you and any harmful bacteria Tears: Flushes out bacteria from your eyes Mucus: Catches bacteria in your your throat Cilia: Moves the bacteria filled mucus down from your throat to the stomach Stomach acid: destroys the bacteria the cilia deliver to the stomach Reflexes: Coughing, sneezing, and vomiting all work to get bacteria out of your system When pathogens make it past these defenses, your second line of defense becomes activated |