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Health and Sickness Summary. 2 of 35© Boardworks Ltd 2008 Different types of microbes There are three types of microbes: bacteriavirusesfungi.

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Presentation on theme: "Health and Sickness Summary. 2 of 35© Boardworks Ltd 2008 Different types of microbes There are three types of microbes: bacteriavirusesfungi."— Presentation transcript:

1 Health and Sickness Summary

2 2 of 35© Boardworks Ltd 2008 Different types of microbes There are three types of microbes: bacteriavirusesfungi

3 3 of 35© Boardworks Ltd 2008 Looking at microbes

4 4 of 35© Boardworks Ltd 2008 Microbes can cause disease The diseases caused by microbes, and their severity, depend on the type of microbe: bacteria food poisoning sore throats tuberculosis (TB) tetanus cholera typhoid bacterial meningitis influenza (flu) mumps chickenpox smallpox polio HIV / AIDS virus viral meningitis fungal sinusitis athlete’s foot fungi onychomycosis (causes discoloured toe nails)

5 5 of 35© Boardworks Ltd 2008 How do microbes enter the body? eyes nose genitals skin ears mouth cuts Microbes can enter the body in many different places: How do the diseases caused by microbes spread?

6 6 of 35© Boardworks Ltd 2008 How does disease spread?

7 7 of 35© Boardworks Ltd 2008 The body’s defences

8 8 of 35© Boardworks Ltd 2008 Preventing the spread of disease There are several methods that can help reduce the spread of disease: disinfecting surfaces disinfecting skin using antiseptics sterilizing equipment using food preservatives in food personal hygiene. The spread of disease can also be reduced by vaccinating the population and using antibiotics.

9 9 of 35© Boardworks Ltd 2008 Why do we need to have vaccinations?

10 10 of 41© Boardworks Ltd 2008 A balanced diet Diet is the usual food and drink that each person consumes and is a very important part of health. A balanced diet means eating the right types of food in the right amounts so that the body gets the nutrients it needs. What are the seven nutrients needed in a balanced diet? Which foods contain these nutrients, and why are they important? carbohydrates proteins fats vitamins minerals water fibre

11 11 of 41© Boardworks Ltd 2008 Getting the amounts right

12 12 of 41© Boardworks Ltd 2008 Deficiency diseases

13 13 of 41© Boardworks Ltd 2008 Organs of the digestive system

14 14 of 41© Boardworks Ltd 2008 Different types of digestive enzymes Digestive enzymes are the chemicals that break large insoluble food molecules into smaller soluble molecules. Digestive enzymes are classified by the type of food that they affect; there are three main types: carbohydrase – breaks carbohydrate into smaller sugars protease – breaks protein into amino acids lipase – breaks fat into fatty acids and glycerol.

15 15 of 41© Boardworks Ltd 2008 How do enzymes work?

16 16 of 41© Boardworks Ltd 2008 Fitness factors

17 © Boardworks Ltd 200817 of 30 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.

18 © Boardworks Ltd 200818 of 30 How do drugs affect the body?

19 © Boardworks Ltd 200819 of 30 What’s in a cigarette?

20 © Boardworks Ltd 200820 of 30 The effects of alcohol


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