WHS AP Psychology Unit 3: Biological Psychology Essential Task 3-5b:Describe the subdivisions and functions of the peripheral nervous system: A. Somatic.

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Presentation transcript:

WHS AP Psychology Unit 3: Biological Psychology Essential Task 3-5b:Describe the subdivisions and functions of the peripheral nervous system: A. Somatic Nervous System B. Autonomic Nervous System –i. Sympathetic Nervous System (Fight or Flight) –ii. Parasympathetic Nervous System (Rest and Digest)

Central Nervous System Brain Brain Imaging Peripheral Nervous System Building Blocks Genetics Evolutionary Endocrine System Neurotransmitters Somatic Autonomic Sympathetic Parasympathetic Biological Psychology Spinal Cord Neurons SensoryMotor Nervous System We are here

Essential Task 3-5b: A. Somatic Nervous System B. Autonomic Nervous System –i. Sympathetic Nervous System (Fight or Flight) –ii. Parasympathetic Nervous System (Rest and Digest) Outline

The Somatic Nervous System Consists of neurons that communicate between the body and the brain Motor Neurons –Neurons that carry messages from the spinal cord or brain to muscles and glands

The Autonomic Nervous System Sympathetic division –Most active when you are angry, afraid, or aroused –Increases heart rate and breathing –Stops digestion –“Fight-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

I’m 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 System Parasympathetic division –Calms body –Produces effects opposite to those of the sympathetic division –Reduces heart rate and breathing –Restores digestion –“Rest and Digest”

The Hypothalamus Has Central Control of the ANS When 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 responses One section of the hypothalamus seems to control many of the "fight or flight" responses; another section favors "rest and digest" activities