At the end of this lesson you should be able to: Drugs (1) At the end of this lesson you should be able to: Define a drug Describe the medicinal use of antibiotics for the treatment of bacterial infection Describe the effects of the abuse of heroin Describe the effects of the excessive consumption of alcohol

Drugs (2) Definition: any substance taken into the body that modifies or affects chemical reactions in the body Drugs have been around a long time, originally coming from plants to heal to alter perceptions

Medicinal Drugs (3) Antibiotics: a substance that kills bacteria, but does not harm our cells Discovered 1944 Can loose potency

Misused Drugs: Heroin (4) Opium Poppies: gave us heroin, morphine, codine Depressant: slows brain functions, slows breathing, decreases pain, euphoria Can be Life threatening Very addictive

Addiction (5) Addiction is when a person becomes dependent on the drug and can’t stop taking it without suffering severe psychological and physiological symptoms

Misused Drugs: Alcohol (6) Media Perception? Quickly absorbed from stomach into the blood stream, eventually broken down by the liver Depressant slows reaction time Increase aggression, decrease inhibitions Can kill in many different ways

Misused Drugs: Alcohol (7) Alcoholism – what do you know? Disease (cause unknown) Alcoholics need to drink large quantities Poisonous to the liver (cirrhosis) Poisonous to the brain (memory loss, confusion) Kills cells by osmosis. Also is a diuretic.

Smoking (8) Cigarette smoke is FILLED with damaging substances Nicotine – stimulant Tar – carcinogens Carbon Monoxide – oxygen deprivation Smoke Particles – emphysema

Define a drug Describe the medicinal use of antibiotics for the treatment of bacterial infection Describe the effects of the abuse of heroin Describe the effects of the excessive consumption of alcohol