1
Q
Name three External defences against microbes
A
- Sticky mucus in the windpipe that stops microbes getting into lungs
- Skin as a barrier against microbes getting into th body
- Acid in the stomach that kills what you swallow
2
Q
Name two Internal defences against microbes
A
- White blood cells that destroys microbes in the blood
- Antibodies that destroy microbes in the blood
3
Q
Name an artificial defence against microbes.
A
Vaccinations
4
Q
What is a vaccine?
A
A dead or altered form of a disease e.g. dead virus.
5
Q
How does a vaccine work?
A
The vaccine does not make the person ill, but their immune system responds and makes antibodies which stay in the body and give long term protection against the disease.
