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5629470
Heroin
Description
A-Level Psychology Mind Map on Heroin, created by Rebecca Johnstone on 01/06/2016.
No tags specified
psychology
a-level
Mind Map by
Rebecca Johnstone
, updated more than 1 year ago
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Created by
Rebecca Johnstone
about 8 years ago
17
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Resource summary
Heroin
Mode of action
1- morphine produced when taking heroin is a painkiller
2- the morphine acts upon opium receptor sites
3- the binding to opiate receptors triggers release of the neurotransmitter dopamine
4- morphine mimics endorphons to stimulate this dopamine reward system
5- GABA activity is inhibited
6-It increases dopamine levels in the brain
Effects
short term
pleasure feelings
reduction of pain
rush
dry mouth
heavy limbs
flushing of skin
relaxation
drowsiness
slowing of mental functioning
Long term
psychological and physical dependence
tolerance
cravings
collapsed veins
diffiulty breathing
infections
Withdrawal effects
Itchy skin
Sickness
Diarrohoea
sweating
insomia
depression
anxiety
Tolerance
More heroin is needed to reach the same 'rush' or pleasurable feelings as the first time becoming more addicted
Physical dependence
Means the body cannot function without Heroin in its system
Psychological dependence
the mind won't be able to function without it
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