Source: The U.S. Department of State. The Southwest differs from the adjoining Midwest in weather (drier), population (less dense), and ethnicity (strong Spanish-American and Native-American components). Outside the cities, the region is a land of open spaces, much of which is desert.
Parasympathetic vs. Sympathetic Nervous System. The parasympathetic nervous system (PNS) controls homeostasis and the body at rest and is responsible for the body's rest and digest function. The sympathetic nervous system (SNS) controls the body's responses to a perceived threat and is responsible for the fight or flight response.
Sympathetic vs Parasympathetic Nervous System. Autonomic nervous system is considered as a self-control system that comes under peripheral nervous system. It basically regulates the internal environment of the body, exchanging commands between peripheral nervous system and organs in order to maintain important body functions.