Psychology › Section C · Biopsychology › Topic C.3
Parts of the nervous system
A single nervous system runs everything from your heartbeat to your philosophy - but it is not a single structure. It is a hierarchy: central and peripheral, voluntary and automatic, arousal and calm, each division answering a different survival question.
In this topic
- Central and peripheral
- Somatic and autonomic: voluntary and automatic
- Sympathetic: fight or flight
- Parasympathetic: rest and digest
- The spinal cord and reflexes
- Worked example: one crash, two divisions
- Worked example: tracing a signal's path
- Common mistakes to avoid
- Key takeaways
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