circulatory system - 7 - the immune system

3.7  The immune system
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3.7  The immune system

Slide 1 - Diapositive

immune system
- works against pathogens 
- things that do not belong in your body
- also called antigens / foreign bodies
- virusses, bacteria, fungi and parasites can cause infections

Slide 2 - Diapositive

Antibodies
- your body produces antibodies against antigens
- first infection: IgM
- following infection(s): IgG
(IgE, IgD and IgA are more associated with mucosal- and cellular immunity )

Slide 3 - Diapositive

Antibodies
How does production of antibodies work?

Slide 4 - Diapositive

How do antibodies work?
- first of all: an antibody attaches himself to an antigen with his binding side
- this fits perfectly 

Slide 5 - Diapositive

How do antibodies work?
-Then other white bloodcells (macrophages) come into action to 'eat' and digest the antigen

Slide 6 - Diapositive

active immunity
-natural
Your body encounters the pathogen (eg - chicken-pox) in an infection

-artificial
You receive a vaccination

Slide 7 - Diapositive

Vaccination
What is a vaccine?

A vaccine consists of 
-dead or weakened pathogens 
-or a part of a pathogen


Slide 8 - Diapositive

Slide 9 - Diapositive

Pox
Small-pox and cow-pox were related
The antigens were very much alike
The antibodies formed against cow-pox also worked against small-pox! (cross-resistence)

Slide 10 - Diapositive

vaccination regime
allmost all childeren in the Netherlands receive vaccinations.
 

Slide 11 - Diapositive

passive immunity
passive means that you don't do anything
So it means that your body is NOT producing antibodies, but receives antibodie from someone else. 
It generates NO memory.

Slide 12 - Diapositive