Biopsychology: Endocrine system
- Created by: DickinsonJessica
- Created on: 06-06-19 18:30
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- Biopsychology: The Endocrine System.
- Key features of the endocrine system.
- Works alongside nervous system to control vital functions in body through hormones.
- Slower than nervous system but has widespread and powerful effects.
- Glands.
- Organs in body producing hormones.
- Pituitary gland, located in brain.
- 'Master gland' as controls release of hormones from all other endocrine glands.
- Pituitary gland, located in brain.
- Organs in body producing hormones.
- Hormones.
- Secreted in bloodstream and affect any cell in body that has receptor for that hormone.
- Thyroxine produced by thyroid gland affects heart's cell and cells throughout body increasing metabolism, affecting growth rates.
- Endocrine system and autonomic nervous system work together e.g. fight or flight response.
- Often endocrine system and autonomic nervous system work in parallel e.g. during a stressful event.
- 1. When stressor percieved, hypothalamus triggers activity in sympathetic branch of autonomic nervous system.
- 2. Autonomic nervous syetem changes from its normal resting rate (parasympathetic state) to the physiologically aroused sympathetic state.
- 3. Stress hormone adrenaline released from adrenal medulla into bloodstream.
- 4. Adrenaline triggers physiological changes in target organs e.g. increased heart rate.
- 5. Once threat has passed, parasympathetic nervous system returns body to resting state.
- Acts as a 'brake' and reduces activity of body that were increased by actions of sympathetic branch.
- Often endocrine system and autonomic nervous system work in parallel e.g. during a stressful event.
- Key features of the endocrine system.
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