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10 cards from this deck
Central nervous system (CNS) & peripheral nervous system (PNS)
Brain and spinal cord
86 billion neurons
12 pairs
45 centimetres
Involuntary response without conscious brain input
5 steps
Somatic nervous system & autonomic nervous system
Increases arousal, fight-or-flight-or-freeze response
Maintains homeostasis & returns body to calm
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