Shaneeqa cuts her finger and it get infect with a virus. Explain how her body fights the virus.
Her neck glands swell because they are producing lots of white blood cells. The blood carries the white blood cells to her finger and they engulf the virus and get rid of it before it can spread.
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What do antibiotics do?
They kill bacteria and fungi but NOT viruses.
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If antibodies are so good, why do we still get ill?
This is because antigens on every microorganism are different. This means the body has to create a new antibody for every different microorganism.
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Why can you only get chicken pox once?
Because your body makes an antibody to fight it the first time you get it and then some of the memory cells remember the antibody needed to fight the infection. This means your body destroys the infection before you become ill.
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Why do people get so many colds?
Because there are hundreds of different types of cold virus, and they all keep mutating, so each time someone catches a cold their body has to make new antibodies to fight the cold.
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What is a vaccine?
Something that kick starts the production of your white blood cells.
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How do vaccines work?
A small amount of a disease is injected into you so that your body produces white blood cells and kills the infection. this means that if you ever get this illness again it won't affect you cause your memory cells will already know how to combat it.
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Why do doctors use vaccines when there is still a small chance of allergic reaction or harmful effects?
Because the benefits outweigh the risks.
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Why is it important for lots of people to be vaccinated against diseases?
Because if lots of people aren't vaccinated then there is a much higher chance of a break out because not only are there more people to infect but there are also more people to infect other people.
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Why are vaccinations not compulsory in the UK?
Because the government believes that it is peoples own choice as their is still a slight risk of illness from vaccinations.
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What is a superbug?
A bacterial or fungal disease that has become immune to antibiotics because they have been overused.
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What is the first stage of drug testing?
Testing on human cells that are infected with a disease.
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What is the second stage of drug testing?
Animal testing is used next to find out how well the drug works on whole animals rather than just cells.
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What is the third stage of drug testing?
Clinical trials. This is where humans are tested on, healthy humans at first, and if it seems okay to use then they will try using it on people who are ill to see if it fights the illness and is safe.
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What is an open label trial?
Where both the doctor and the patient know the treatment.
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What is a blind trial?
This is where only the doctor knows the treatment, and often they prescribe placebos to the patient.
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What is a heart attack?
When an artery is blocked in the heart by a fatty lump, and so part of the heart is starved of oxygen and it's cells begin to die.
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What leads to heart attacks?
High blood pressure from salty and fatty diets can lead to heart attacks.
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Other cards in this set
Card 2
Front
What do antibiotics do?
Back
They kill bacteria and fungi but NOT viruses.
Card 3
Front
If antibodies are so good, why do we still get ill?
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