Smoking is cool – I walk miles for a smoke DRUGS

Really????

CGRAHAMPHYSICS.COM 2015

•  What is drug? •  Discuss the different kinds of drugs you

know of and what makes them a drug.

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CGRAHAMPHYSICS.COM 2015

WHAT IS A DRUG?

A drug is any substance that changes the way the body or mind works.

How many different types of drug can you name?

Paracetamol, alcohol, nicotine, cannabis and ecstasy are all examples of substances that can be called drugs.

Some drugs are beneficial, like asthma drugs, but others like alcohol and nicotine in cigarettes can cause harm.

Drugs can be categorized into over-the-counter drugs, prescription drugs, recreational drugs and illegal drugs.

WHY ARE DRUGS SO DANGEROUS?

You never know what other substances have been added to an illegal drug, so these could cause unknown effects.

Drugs can affect the way your brain works and cause damage to your body. They make you more likely to have accidents and make bad decisions.

An overdose is when someone takes too much of a drug. This can cause death or serious illness.

People can become addicted to drugs. This means that they develop a physical or mental need for the drug.

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How is each type of drug classified?

When tobacco smoke is inhaled, the nicotine quickly enters the bloodstream and has a stimulating effect on the nervous system.

Cigarettes are made from finely cut and dried tobacco leaves. Tobacco is made from the leaves of the tobacco plant, which contain small amounts of nicotine.

SMOKING TOBACCO

However, smoking is very dangerous and can have serious effects on the lungs and respiratory system.

SMOKING AND THE RESPIRATORY SYSTEM

Why is a respiratory system that works properly essential for good health?

The respiratory system, which includes the lungs, provides the body with the oxygen it needs for respiration.

The lungs are delicate, spongy organs that deal with 12,000 litres of air each day.

How does smoking damage the respiratory system?

WHAT’S IN A CIGARETTE?

WHAT’S IN A CIGARETTE?

HOW DOES SMOKING AFFECT HEALTH?

How will these chemicals be harmful to the body’s systems?

Carbon monoxide – A poisonous gas that reduces the amount of oxygen that red blood cells can carry around the body.

Nicotine – An addictive drug that affects the central nervous system. It increases the heart rate and narrows the blood vessels, causing high blood pressure.

Tar – A brown, sticky substance that consists of tiny particles and is formed when tobacco smoke condenses. Tar paralyzes tiny hairs in the airways called cilia, this stops them removing mucus easily.

•  Prepare a presentation on how smoking causes different diseases;

   

heart disease

empyshema

lung cancer

bronchitis

•  In pairs, research the following: - what causes the disease - the symptoms of the disease - what happens to the body - other information

•  Combine everything you have found

•  Prepare an A3 poster with the information you need to talk about

•  Include diagrams where necessary

TASK

CGRAHAMPHYSICS.COM 2015

HOW DOES SMOKING AFFECT THE LUNGS?

Which picture shows the healthy lungs of a non-smoker and which shows the unhealthy lungs of a smoker?

Which set of lungs would you prefer?

PLENARY - SMOKING QUIZ