Multiple sclerosis (MS) is an autoimmune disease that affects the central nervous system. With multiple sclerosis, the brain has difficulty getting messages to the rest of the body. Though we know relatively little about multiple sclerosis, research into its causes and possible treatments is rapidly developing.
Definition of gut - the stomach or belly, used in reference to a feeling or reaction based on an instinctive emotional response rather than considered Definition of gut - the stomach or belly, used in reference to a feeling or reaction based on an instinctive emotional response rather than considered dictionary thesaurus
For the Chuck Palanhuik short story, see Haunted (Palahniuk novel) Â§ Guts. Gastrointestinal is an adjective meaning of or pertaining to the stomach and intestines. A tract is a collection of related anatomic structures or a series of connected body organs.