Human Diseases

... Human Diseases The disease causing organisms Bacteria, Viruses and Fungi enter the body through natural openings and wounds/breaks in the skin. Natural openings such as the nose, mouth, urethra, anus and vagina are lined with mucous membranes which are moist providing the perfect environment for microbial growth, and consequently micro-organisms then infect other organs. Wounds and breaks in the skin (which can be caused by a multitude of things including scratches and cuts) enable bacteria to enter and can cause wounds to become septic, alternatively fungi or ringworm could enter and cause their own problems (athlete's foot being one). Deep wounds can allow pathogens to cause more serious problems, as they can infect muscles and joints. Muscles and joints are normally completely sterile and once infected can quickly succumb to disease. Hair follicles can also be an entry point for pathogens; staphylococci can invade here and cause localised infections. Insect

want to read more? →