Zusammenfassung der Ressource
drugs
- definition = a substance that modifies or affects chemical reactions in the body
- harmful
- smoking
- pregancy
- reduces oxygen to fetus
- miscarrige
- premature birth
- low weight
- cigarettes
- 4000 chemicals
- nicotine
- carbon monixide
- combines with hymoglobin
- reduces ability of blood to carry oxygen
- strain on circulatory system
- heart disease
- strokes
- tar
- carcinogens
- cancer
- lung
- mouth
- throat
- beneficial
- extracted from natural resources
- drug testing
- computer models
- human cells grown in labs
- animal testing
- clinical trials
- test group
- new drug
- control group
- existing drug or placebo
- blind trials
- volunteers don't know if test or control group
- double blind trials
- volunteers and researchers don't know which group they're in
- Antibiotics
- slow down or stop growth of bacteria
- penicillin
- 1928, Alexander Fleming
- depressant
- slows down nerve and brain activity
- alcohol, solvents, temazepam
- affect the synapses between neurones in the nervous system
- stop the next neurone sending nerve impulses
- hallucinogen
- changes what we see and hear
- LSD
- painkiller
- blocks nerve impulses
- aspirin, paracetomol
- performance enhancer
- improves muscle development
- anabolic steroids
- stimulant
- increases nerve and brain activity
- nicotine, caffeine, ecstasy
- cause more neurotransmitter molecules to diffuse across the synapses
- prescription
- illegal
- class A
- most dangerous
- ecstasy, cannabis, heroin, cociane
- addicitve
- damage heart & circulatory system
- needle drugs, infected blood
- HIV, hepititas
- alcohol
- ethanol
- depressant
- slows signals in nerves and brain
- liver removes alcohol from bloodstream
- enzymes breakdown alcohol
- toxic
- effects
- sleepiness
- impaired judgment
- loss of balance
- loss of control
- blurred vision and speech
- increased blood flow to skin
- damage to liver and brain