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WHS AP PsychologyUnit 3: Biological PsychologyEssential Task 3-5b:Describe the subdivisions and functions of the peripheral nervous system:A. Somatic Nervous SystemB. Autonomic Nervous Systemi. Sympathetic Nervous System (Fight or Flight)ii. Parasympathetic Nervous System (Rest and Digest)
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Essential Task 3-5b: A. Somatic Nervous SystemB. Autonomic Nervous Systemi. Sympathetic Nervous System (Fight or Flight)ii. Parasympathetic Nervous System (Rest and Digest)Outline
The Somatic Nervous SystemConsists of neurons that communicate between the body and the brainMotor NeuronsNeurons that carry messages from the spinal cord or brain to muscles and glands
The Autonomic Nervous SystemSympathetic divisionMost active when you are angry, afraid, or arousedIncreases heart rate and breathingStops digestionFight-or-flight
SNS = Evolutionary Byproduct
Scared Bros
Hold me!
Congo line of fear
Swag gone scared
Even Flannel Bros have an SNS response
Connector Bros
Im not really here to protect you. ( I just happen to be in front)
Fight, Flight and Freeze
The better to see you with my dear
The Autonomic Nervous SystemParasympathetic divisionCalms bodyProduces effects opposite to those of the sympathetic divisionReduces heart rate and breathingRestores digestionRest and Digest
The Hypothalamus Has Central Control of the ANSWhen someone experiences a stressful event, the amygdala, an area of the brain that contributes to emotional processing, sends a distress signal to the hypothalamus. This area of the brain functions like a command center, communicating with the rest of the body through the nervous system so that the person has the energy to fight or flee.The hypothalamus is involved in the coordination of ANS responsesOne section of the hypothalamus seems to control many of the "fight or flight" responses; another section favors "rest and digest" activities
*Logo Green is R=8 G=138 B=76 Blue is R= 0 G=110 B=184Border Grey is R=74 G=69 B=64****http://www.flickr.com/photos/nightmaresfearfactory/with/7982997709/ **