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.
The autonomic nervous system (ANS) is a system of motor neurons that innervate smooth muscle, cardiac muscle and glands. The autonomic nervous system has two divisions: Sympathetic and Parasympathetic.They mostly innervate the same structures but cause opposite effects. The sympathetic division mobilizes the body during extreme situations such as exercise, excitement and emergencies.he âdorsal root gangliaâ is in the sensory somatic part of the peripheral nervous system and are sensory ganglia made up of cell bodies of sensory neurons.