When the switch of a flashlight is pushed into the ON position, it makes contact between two contact strips, which begin a flow of electricity, powered from the battery. The batteries are connected in such a way that electricity (flow of electrons) runs between the positive and negative electrodes of the battery.
Shigella infection (shigellosis) is an intestinal disease caused by a family of bacteria known as shigella. The main sign of shigella infection is diarrhea, which often is bloody. Shigella can be passed through direct contact with the bacteria in the stool.
Inflammatory bowel disease: A group of chronic intestinal diseases characterized by inflammation of the bowel -- the large or small intestine. The most common types of inflammatory bowel disease (IBD) are ulcerative colitis and Crohn disease.he inflammation in Crohn disease involves the entire thickness of the bowel wall, whereas in ulcerative colitis the inflammation is confined to the mucosa (the inner lining) of the intestine. The symptoms of IBD include abdominal pain and diarrhea. The course is typically unpredictable.