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hormones endocrine system
A LevelPsychology~4 min read
Overview
This lesson explores the crucial role of hormones and the endocrine system in regulating various bodily functions and influencing behaviour. We will examine how glands produce and secrete hormones, their mechanisms of action, and their impact on psychological processes.
Introduction to the Endocrine System
The endocrine system is a vital communication network within the body, working alongside the nervous system to coordinate physiological processes and behaviour. Unlike the nervous system's rapid electrical signals, the endocrine system relies on **hormones**, which are chemical messengers transporte...
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Key Concepts
- Endocrine System: A system of glands that produce and secrete hormones directly into the bloodstream to regulate distant target organs.
- Hormones: Chemical messengers produced by endocrine glands that travel through the bloodstream to exert specific effects on target cells or organs.
- Glands: Organs that produce and secrete substances, either hormones (endocrine) or other substances (exocrine).
- Target Cells/Organs: Cells or organs that possess specific receptors for a particular hormone, allowing them to respond to its presence.
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Exam Tips
- →When explaining hormonal effects, always link the specific hormone to its gland of origin and its target organs/cells. For example, 'Adrenaline, secreted by the adrenal glands, acts on various target organs like the heart and muscles to prepare the body for 'fight or flight'.'
- →Be prepared to discuss specific examples of how hormonal imbalances can lead to psychological symptoms (e.g., hyperthyroidism and anxiety, high cortisol and depression).
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