1.2.1 lesson 3 - drugs part 1
TRANSCRIPT
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GCSE PE
Drugs – Part 1
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Starter Activity
Keeping your books closed and working with the person next to you come up with the 5 different weight-related conditions and a
sentence to explain each one.
Be prepared to tell your answer to the class.
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UnderweightOverfat
Overweight
ObeseAnorexic
Starter activity
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Learning Objectives
By the end of the lesson you should be able to recall and explain the following:
The recreational and socially acceptable drugs taken on a daily basis by some people
The effects these drugs have when playing sport
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Socially acceptable drugsThe three most important drugs that are considered to be socially acceptable are:
Alcohol
Tobacco (nicotine)
Nicotine is a legal drug, though it is slowly becoming less socially acceptable. (How/Why?) Nicotine raises the heart rate and blood pressure.
Alcohol is socially acceptable in most sections of society. However it is banned in many sports for safety reasons – it acts as a sedative, slowing reactions and impairing judgement.
Caffeine Caffeine can be found in coffee, tea and energy drinks. Generally used to stimulate your body and mind.
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Smoking – what’s in a cigarette?
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Smoking – what’s in a cigarette?
Nicotine is a mild poison. It makes your blood pressure and heart rate rise – this can make new smokers dizzy. It is highly addictive, which is why it is difficult to give up smoking.
Tar is a mixture of chemicals (formaldehyde, arsenic and cyanide to name a few). When cigarette smoke is inhaled, tar is left behind in the lungs. It causes many serious diseases.
healthy lungs smoker’s lungs
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Smoking – what’s in a cigarette?
Carbon monoxide is an odourless, tasteless, poisonous gas.
It bonds with red blood cells in the same way that oxygen does, except that the bond is permanent. Blood cells carrying carbon monoxide can no longer transport oxygen, therefore reducing the amount of oxygen the blood can carry.
Up to 15% of a smoker's blood may be carrying carbon monoxide instead of oxygen. This means the heart has to work harder, putting strain on it and causing circulation problems.
It also makes smokers tired and breathless, reducing cardiovascular endurance.
Smokers tend to be at a disadvantage in sports that require an efficient and healthy cardio-respiratory system.
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Smoking – what’s in a cigarette?
Common diseases (Task 7):
Coronary Heart Disease
Fatty deposits line arteries restricting blood flow leading to heart attacks
Cancer
90% of lung cancer is caused by smoking
Bronchitis
‘Smokers cough’ as bronchi (air tubes) in the lungs swell and make it difficult to breathe
Emphysema
Caused in part by bronchitis the alveoli get damaged and thus reduce the ability to create ‘gaseous exchange’
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Alcohol
All alcoholic drinks contain a chemical called ethanol. This is what makes people ‘drunk’.
It doesn’t do much harm in small quantities, however larger quantities are dangerous.
Binge drinking is drinking more than 4 alcoholic drinks in one session.
Alcohol puts strain on your body, making you unwell – that’s why heavy drinkers may be sick and later suffer from a ‘hangover’.
However, alcohol also has more serious effects, both short- and long-term.
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Alcohol
• What are the effects of alcohol in the short term and the long term?
• Working with a partner complete task 8 (page 14) in your booklet.
• You must come up with at least 4 answers for both of them
• Now we will check your answers – remember to add any that you have missed
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• Impairs motor functions (e.g. walking)
• Vomiting
• Aggression, violence and crime
• Impairs reasoning and information processing
• Increases confidence and lowers inhibitions – a bad combination!!
• Dehydration – it is a diuretic so it causes extra urine to be produced
Short term effects
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• Death – drinking is blamed for up to 33,000 deaths a year– in the UK alone!
• Liver disease - cirrhosis
• Cancer of the mouth and throat
• High blood pressure
• Decreased sperm count, shrinking genitals
• Increased risk of breast cancer, infertility
Long term effects
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Alcohol and sport
Banned from the following sports due to it’s ability to have a calming affect on the participant which may improve their
performance:
Shooting
Archery
Also banned in some sports where it is considered a safety risk as it slows down reaction times and impairs judgement:
Formula 1
Most motor sports
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The effects of alcohol on performance
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Debate
• Task 9
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Learning Objectives
By the end of the lesson you should be able to recall and explain the following:
The recreational and socially acceptable drugs taken on a daily basis by some people
The effects these drugs have when playing sport
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Homework
The following homework tasks:
• HWK 7 page 12
• Prepare for your presentations on performance enhancing drugs next lesson.