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Lecture

Neurons and the Nervous System.docx

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Department
Psychology
Course
PSYA01H3
Professor
Steve Joordens
Semester
Fall

Description
PSYA01 Oct. 1/3 Central nervous system  Controls the brain and the spinal cord and brain  This makes the decisions of what the body is going to do Peripheral nervous system  Transports messages back and forth throughout body Autonomic System (involuntary) There are two types of nervous system reactions: Relaxed:  slower heart rate, breathing  digestion at work  Parasympathetic mode o Long term survival of body Active:  4 Fs o Fight, flight, feeding, and sexual activity (there is an F for this too)  Breathing heavily PSYA01 Oct. 1/3 o Getting more oxygen to muscles  Dry mouth  Sympathetic mode o Short term survivak Too much stress can make you sick (i.e. being in a constant state of sympathetic mode) because it does not allow for parasympathetic mode to occur for body repair. Somatic system (voluntary) Nucleus  Makes ‘decision’ Dendrites  Receives information that the neurons will use to make decisions Axo
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