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.
1). sympathetic system enhances activity 2). The parasympathetic system inhibits activity Thus extrinsic control is the result of a balance between both the parasympathetic and the sympathetic nervous system. A). autonomic nervous system. 1). sympathetic system enhances activity. 2).