Psychology › Section C · Biopsychology › Topic C.5
The endocrine system
The nervous system sends messages in milliseconds along wires; the endocrine system sends them in seconds to minutes through the bloodstream - slower, longer, and felt everywhere at once. Hormones are the body's second messaging system, and the two systems talk constantly.
In this topic
- The second messaging system
- The pituitary: the master gland
- The gland roster
- The stress axis: HPA
- Selye's general adaptation syndrome
- Worked example: jet lag, decoded
- Worked example: the exam morning
- Common mistakes to avoid
- Key takeaways
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