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16 Cards in this Set

  • Front
  • Back
What are the two types of pathogen?
Bacteria and Viruses
Describe how bacteria reproduces.
Bacteria reproduce rapidly inside your body.
How does bacteria make you feel ill?
By damaging your cells and producing toxins (poisons).
How do viruses copy themselves?
Viruses copy themselves by invading cells and using the cells machinery to make tons of copies.
What happens after the viruses have finished coping themselves?
The cell will usually then burst, releasing all the new viruses.
What does the cell damage do?
This cell damage is what makes you feel ill.
What is in your respiratory tract (airways) and why are they there?
Your skin, plus hairs and mucus in respiratory tract (airways) stop nasties getting in.
What do your cells do if your skin is cut?
If your skin is cut, tiny bits of cells help your blood clot quickly to stop anything else getting in.
What happens if a pathogen got through a cut?
If something does make it through, your immune system kicks in.
What is the most important part of your immune system?
The most important part of your immune system kicks in.
What are the three lines of attack that your body uses when it becomes an invading pathogen?
Consuming Them
Producing Antibodies
Producing Antitoxins
What can the white blood cells do to the pathogens?
White blood cells can engulf (surround) the pathogens and digest them.
What does every invading pathogen have on its surface and what are they called?
Every invading pathogen has unique molecules on its surface. These molecules are called antigens.
What happens when your white blood cells come across a foreign antigen (i.e. one they don't know)?
When your white blood cells come across a foreign antigen (i.e. one they don't know), they will start to produce antibodies.
What do the antibodies do to the pathogens?
The antibodies produced are specific to that type of antigen... why?
Antibodies lock onto and kill the invading pathogens. The antibodies produced are specific to that type of antigen so they won't lock on to any others.
What do antitoxins do?
These stop toxins produced by invading bacteria.