The Vagus nerve is the longest nerve in the autonomic nervous system. It emanates from the brain. Information flowing through the Vagus nerve goes to and from the brain surface to organs and tissues of the body. Vagus is derived from the Latin word "wandering." It is named so because the Vagus nerve wanders from the brain to the organs in the abdomen, chest, and the neck. Many people are yet to understand that the Vagus nerve is probably the...