Documents Immune system

Your Bodyâs Defense Physical Defenses First line of defense Skin Hair Mucous Cilia Saliva Tears Sweat Digestive tract Skin Protects from micro-organisms entering the body…

Documents Your Body’s Defense

Your Bodyâs Defense Physical Defenses First line of defense Skin Hair Mucous Cilia Saliva Tears Sweat Digestive tract Skin Protects from micro-organisms entering the body…