8. Stress and emotion Flashcards
What two areas is the hypothalamo-pituitary axis made up of? (Stress psychobiology)
- Posterior pituitary
- Anterior pituitary
In terms of stress response, what is ACTH affected by? (Stress psychobiology)
CRH release
What is the structure of CRH? (Stress psychobiology)
A small peptide hormone
What is the structure of ACTH? (Stress psychobiology)
A large peptide hormone
What is the structure of adrenaline and noradrenaline? (Stress psychobiology)
Monoamines
How do molecules act? (Stress psychobiology)
Via protein receptors in the target tissue
What are the two main systems for stress? (Stress psychobiology)
- Sympathetic nervous system
- Parasympathetic nervous system
What does the sympathetic nervous system trigger? (Stress psychobiology)
Fight or flight
What does the parasympathetic nervous system do? (Stress psychobiology)
Rest and digest
What is the chain of events in the parasympathetic branch? (Stress psychobiology)
- Stressor in the environment
- Hypothalamus activated
- Pituitary gland activated
- ACTH released into blood stream
- Adrenal cortex enlarged
- Cortisol released
Rest and digest
What is the chain of events in the symapathetic branch? (Stress psychobiology)
- Stressor in the environment
- Hypothalamus activated
- Adrenal medulla activated
- Enlarges and stimulated
- Release of adrenaline and noradrenaline
Fight or flight
What do acute stressors induce and what does it do? (Stress psychobiology)
A analgesic effect
Surpasses the incoming nociceptive information
What do glucocorticoids do? (Stress psychobiology)
Suppress inflammation
