B3 1.6: Artificial breathing aids.

All information was taken directly from the AQA revision guide with only the key points from B3 1.6.

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  • Created by: JSpencer
  • Created on: 03-03-16 19:04
Why can't someone get oxygen into their bloodstream? 1
Alveoli damaged = Surface area for gas exchange is reduced.
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Why can't someone get oxygen into their bloodstream? 1
Tubes leading to the lungs are narrowed = less air can be moved through them.
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Why can't someone get oxygen into their bloodstream? 1
Person is paralysed = Muscles don't work to pull their ribcage up and out.
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What is a common breathing aid?
The iron lung.
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Why is the iron lung good?
Can be used for people who have polio and are paralysed.
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How does the person have to lie in the iron lung?
On thei chest sealed in a large metal cylinder.
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How does the iron lung work?
Air is drawn out of the cylinder so the persons chest moves out and breaths in. The air is pumped back in the cylinder creting presuure on the persons lungs to breathe out.
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What is positive pressure?
A system where external pressure is different to internal pressure.
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What happens when bags of air are linked to masks?
They force air down the trachea.
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Why are positive pressure aids better?
Smaller, easier to manage in the home and can be linked to a computer to control.
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Card 2

Front

Why can't someone get oxygen into their bloodstream? 1

Back

Tubes leading to the lungs are narrowed = less air can be moved through them.

Card 3

Front

Why can't someone get oxygen into their bloodstream? 1

Back

Preview of the front of card 3

Card 4

Front

What is a common breathing aid?

Back

Preview of the front of card 4

Card 5

Front

Why is the iron lung good?

Back

Preview of the front of card 5
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