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HIPPOCRATE ANCIENT GREEKS

He based his medical
practice on observations and on
the take aim of the human body.
He held the belief that illness
had a physical and a rational
explanation. He rejected the
views of his time that
considered illness to be caused
by superstitions and by
possession of evil spirits and
disfavor of the gods.

stressor
An internal or external factor
that makes demands on an
individual and tends to disrupt
homeostasis. Stressors include
physical trauma, disease, social
events and situations, and the
demands of exercise and
competition.
several(prenominal)(prenominal) agent that causes stress to
an organism

Physiologists define stress as
how the body reacts to a
stressor, solid or imagined, a
stimulus that causes stress.
Acute stressors affect an
organism in the short term;
chronic stressors over the
longer term.
Selye researched the effectuate of
stress.

Alarm is the first stage. When
the threat or stressor is
identified or realized, the bodys
stress response is a state of
alarm. During this stage
adrenaline leave be produced in
order to bring about the fight-
or-flight response.



There is also
some activation of the HPA axis,
producing cortisol.
Resistance is the second stage.
If the stressor persists, it
becomes necessary to attempt
some essence of coping with the
stress. Although the body
begins to try to adapt to the
strains or demands of the
environment, the body cannot
concur this up indefinitely, so its
resources are gradually depleted.

Selye: eustress and distress
Selye published in 1975 a model
dividing stress into eustress and
distress.[3] Where stress
enhances function (physical or
mental, such as through
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