Presentation is loading. Please wait.

Presentation is loading. Please wait.

1 of 10© Boardworks Ltd 2013 Microbes and disease To enable the animations and activities in this presentation, Flash Player needs to be installed. This.

Similar presentations


Presentation on theme: "1 of 10© Boardworks Ltd 2013 Microbes and disease To enable the animations and activities in this presentation, Flash Player needs to be installed. This."— Presentation transcript:

1 1 of 10© Boardworks Ltd 2013 Microbes and disease To enable the animations and activities in this presentation, Flash Player needs to be installed. This can be downloaded free of charge from http://get.adobe.com/flashplayer/ http://get.adobe.com/flashplayer/

2 2 of 10© Boardworks Ltd 2013 Science Ages 11-14

3 3 of 10© Boardworks Ltd 2013 Fighting disease

4 4 of 10© Boardworks Ltd 2013 How does disease spread?

5 5 of 10© Boardworks Ltd 2013 Defences against disease Harmful microbes can cause disease by damaging body cells. Once microbes have entered the body, it’s important that they are removed as quickly as possible to reduce damage. The body’s immune system uses specialized cells called white blood cells to identify and destroy the microbes. How does the body try to stop harmful microbes from entering?

6 6 of 10© Boardworks Ltd 2013 The body’s defences

7 7 of 10© Boardworks Ltd 2013 What do white blood cells do? If harmful microbes enter the body the immune system produces white blood cells to help defend it from microbes. Some white blood cells can destroy microbes by engulfing them. Some white blood cells are able to produce chemicals called antibodies. These pair with matching antigens on the surfaces of microbes and so help the white blood cells to engulf microbes. white blood cell bacteria antigen

8 8 of 10© Boardworks Ltd 2013 Destroying microbes

9 9 of 10© Boardworks Ltd 2013 Producing antibodies

10 10 of 10© Boardworks Ltd 2013 Webinar


Download ppt "1 of 10© Boardworks Ltd 2013 Microbes and disease To enable the animations and activities in this presentation, Flash Player needs to be installed. This."

Similar presentations


Ads by Google