circulatory system - 7 - the immune system

3.5 The immune system

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BiologieMiddelbare schoolvwoLeerjaar 2

This lesson contains 12 slides, with text slides.

Lesson duration is: 30 min

Items in this lesson

3.5 The immune system

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immune system

- works against pathogens

- things that do not ........... in your body

- also called ......... / foreign bodies

- virusses, bacteria, fungi and parasites can cause infections

Belong

antigens

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Antibodies

- your body produces antibodies against antigens

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Antibodies

How does production of antibodies work?

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How do antibodies work?

- first of all: an antibody a.............himself to an antigen with his binding side

- this fits per........

attaches

perfectly

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How do antibodies work?

What is happening in de figure?

Then other white bloodcells (macrophages) come into action to 'eat' and digest the antigen

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active immunity

-natural

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

-artificial

You receive a vaccination

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Vaccination

What is a vaccine?

A vaccine consists of

-dead or w............. pathogens

-or a part of a pathogen

eakened

Slide 8 - Slide

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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)

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vaccination regime

allmost all childeren in the Netherlands receive vaccinations.

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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 - Slide