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STRESS
TOPIC 1: Stress as a bodily response
(Sunday)…read more

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Stress as a bodily response In this part of the specification you need to be able
to:
The body's response to stress, including the pituitary- · Outline the body's response to stress. The words `in
adrenal system and the Sympathamedullary pathway outline' are important here. Many students get
in outline bogged down unnecessarily in the underlying
physiology of the stress response. Note that these
`responses' appear under many different headings in
the literature, but you should recognise the common
mechanisms.
Stress- related illness and the immune system · describe research showing a link between stress and
the immune system. Stress has been shown to have
many negative consequences for the individual,
including ill health.
· the specification requires you to study only the
effects of stress on the immune system, although
passing reference to other aspects of illness (e.g.
Cardiovascular disorders) will help you understand
the overall relationship between stress and illness.
·Evaluate research into stress and the immune
system.…read more

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The body's response to stress
The body's response to stress, including the · Outline the body's response to stress. The
pituitary-adrenal system and the words `in outline' are important here. Many
Sympathamedullary pathway in outline students get bogged down unnecessarily in the
underlying physiology of the stress response.
Note that these `responses' appear under
many different headings in the literature, but
you should recognise the common
mechanisms.…read more

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Chronic stress:
Pituitary adrenal system (HPA)
The pituitary adrenal system is under control of the
hypothalamus and pituitary gland. When the brain
evaluates a situation being stressful, they instruct the
hypothalamus to release CRF, which travels to the
pituitary gland. The pituitary releases a number of
hormones into the bloodstream including ACTH which
travels to the adrenal cortex and stimulates the release
of hormones called corticosteroids into the
bloodstream.…read more

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