Chapter 3 Notes

Chapter 3 Notes - Chapter 3Biological Foundations Nervous...

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Chapter 3—Biological Foundations Nervous System--functions as an information processor Input comes from the senses, the nervous system “processes” the input, and we have output in the form of behavior and mental processes Part 1: Organization and Function of the Nervous System The Nervous System has 2 main parts: 1. Central Nervous System (CNS) 2. Peripheral Nervous System (PNS) It does the “processing” of information for us The PNS gets the input “in” and does the output “out” The PNS has 2 main divisions: 1. the Somatic Nervous System 2. the Autonomic Nervous System (ANS) The Somatic Nervous System controls our senses & muscles It does the “input” (through the senses) and the “output” (through our muscles) But , we have to have a way to control “automatic” functions like heart rate (HR), blood pressure (BP), and respiration (breathing), so we have the Autonomic Nervous System (ANS) The ANS has 2 divisions—one to control increases in HR & BP, and The 2 divisions of the ANS are: 1. the Sympathetic Nervous System 2. the Parasympathetic Nervous System The Sympathetic Nervous System “mobilizes us for action”—it gets us ready for “fight-or-flight” It works by releasing adrenaline It increases our HR, BP, and respiration, but it DECREASES digestion The Parasympathetic Nervous System conserves & creates energy for us
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This note was uploaded on 02/01/2012 for the course PSY 111 taught by Professor Cooper during the Fall '08 term at Miami University.

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Chapter 3 Notes - Chapter 3Biological Foundations Nervous...

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