Zusammenfassung der Ressource
Nicotine
- Mode of action
- 1- nicotine acts upon the nicotine receptors in the CNS and NS
- 2- acetylcholine is stimulated and then its receptors are disabled
- 3- increases levels of norepinephrine
- 4-increased endorphin levels leads to anxiety
- effects
- long term
- the lungs become coated in tar which reduces efficiency
- heart problems
- short term
- relaxation
- mild euphoria
- improves attention and problem solving skills
- improves memory
- decreases anxiety
- Withdrawl
- desire for oral gratification
- anxiety
- poor concentration
- memory problems
- depression
- sleeping problems
- sleeping problems
- increased appetite
- Tolerance
- quickly leads to tolerance. Smokers will need more nicotine to get the effects, smokers usually start to increase their use of cigarettes in a short time
- Dependency
- Physical
- is addictive and the brain changes to the extent that nicotine is needed for normal functioning
- psychological
- the individual will become used to the oral stimulation and without it would need to substitute something else e.g eating