Fighting Disease Flashcards
(19 cards)
What is bacteria?
They are small cells,
They reproduce quick inside your body,
They make you feel ill because they damage your cells and produce toxins.
What are viruses?
They are smaller than cells,
They replicate themselves by invading your cells and using the cells machinery to make lots of copies of themselves,
The cell damage makes you ill.
What stops pathogens getting in through your pipework?
Hairs, skin and mucus.
What stops pathogens getting in through cuts?
Small fragments of cells called platelets help the blood clot to seal the wound.
How do the white blood cells travel?
What doing?
They travel through your blood stream checking for microbes.
What does the White blood cell do when it detects something it doesn’t recognise?
It produces antibodies to kill any invading cells. They produce quick and spread around your body killing any similar bacteria or viruses.
What happens when someone is infected with the same pathogen again?
The White blood cell immediately produces antibodies as it knows how to get rid of it.
What is in vaccinations?
Dead or inactive microorganisms of that disease.
How to vaccinations work?
The dead or inactive microorganisms make your body produce antibodies. When the microorganism appears again antibodies are immediately produced.
What happens if a vaccination wears off?
A booster vaccine may be required.
What is a good thing about vaccinations?
They help control diseases,
Big outbreaks of diseases can be prevented.
What is a bad thing about vaccinations?
They do t always work,
Can give you a bead reaction eg swelling or fever.
What are microorganism stat enter your body called?
What do they do?
They are called pathogens and cause disease.
What are painkillers?
Drugs which relieve pain but then don’t cure the disease just reduce the symptoms.
What are antibiotics?
Kill or prevent the growth of bacteria. Different antibiotics will kill different bacteria.
Why don’t antibiotics cure viruses?
Because viruses reproduce by using your body cells so it’s hard to make a drug with doesn’t kill your cells too.
Why do doctors avoid over prescribing antibiotics?
Because some bacteria might be resistant to antibiotics so if you treat the infection only some bacteria will die. The resistant bacteria can then reproduce and cause serious infection which can’t be treated.
Antibiotic resistance….
Is becoming more common?
What was Semmelweis theory?
What year?
In 1840 whilst working in a hospital he noticed lots of women was dying after childbirth because of puerperal fever.
He thought the doctors was spreading the disease with unwashed hands.
He told his doctors to wash their hands with antiseptic and this cut the rate of deaths from 12% to 2%
