What are symptoms?

What can cause symptoms?

How can bacteria reproduce?

Why does bacteria reproduce so quickly inside the body?

How to viruses reproduce and why can they do this easily inside the body?

What is the role of the immune system?

What cells are used in an immune response?

What is the first stage of an immune response?

What's the next stage?

What's special about the white blood cells that do this?

What type is another type of white blood cell?

What do the receptors on these white blood cells do?

What is an antigen?

What is an antibody?

What do antibodies do?

What happens when the antigen is recognised?

What are memory cells?

What is their job?

What is this known as?

What do you inject during vaccination?

What is special about these dead microorganisms?

What happens first when it is injected?

What happens next?

What is the importance of this?

What is the impact of this?

What is an epidemic?

How can epidemics be prevented?

What happens if few people are vaccinated?

What is an issue with vaccines?

What are antimicrobials?

What are they useful for?

What's an example of a microbial?

What's the problem with antibiotics in relation to curing disease?

How can microorganisms become resistant to antimicrobials?

What is the problem with this?

What is a superbug?

Why should you always finish you antibiotics - even if you feel better?

Why should you only take antibiotics when you really need to?

What is the first stage in a drugs trial?

Why is this done?

What's the next stage?

Why is this done?

What is the next stage?

Why is this done?

What's the next stage?

Why is this done?

Why do the human drug trials (clinical trials) last a long time?

What is a placebo?

Why are they used?

Why aren't they always used?

What will be shown if a drug works when using a placebo?

What is an 'open-label' trial?

What is a 'blind' trial?

What is a 'double-blind' trial?

How does the blood circulate around the body?

What is carried to the body cells?

What is carried away from the body cells?

How doe each side of the heart work?

How is blood supplied to the heart?

What are the 3 types of blood vessel?

What are the features of the artery?

Why does it have these features?

What are the features of a vein?

Why does it have these features?

What are the features of a capillary?

Why does it have these features?

What is pulse rate?

What happens when your heart contracts?

What happens when your heart relaxes?

How can you measure blood pressure?

What does each number represent in a measurement?

What can heart rate and blood pressure tell you?

What can cause high blood pressure?

What can happen if a fatty deposit breaks through the inner lining of an artery?

What can causes a heart attack?

What is epidemiology?

How can they identify factors that increase the risk of heart disease?

How do they identify lifestyle factors?

How can they identify genetic factors?