What does the Human Body have acts as a 'First Line of Defence' [Other Words, what are the Non-Specific Defences that don't Target a Specific Pathogen] [1st Part: Skin, Respiratory Tract and Eyes]

-The Skin is a Literal Barrier to Pathogens, and also makes Antimicrobial Substances that kill Pathogens. -Respiratory Tract [Lungs, Nasal Passage...] has Mucus and Cilia along with the Nose having Hairs. Mucus and Hair traps the Particles which may have Pathogens and the Cilia Passes the Mucus back to the Throat where its Swallowed -Eyes, makes Tears, that have an Enzyme [Lysozyme] which break down Bacteria