lungs and breathing

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  • Created by: vanessa
  • Created on: 18-12-13 16:44
what does tar do
it prevents cilia from brushing dirt away so the tar stays in the lungs causing bronchitis
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what are carcinogens
a group of chemicals that cause cancer
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what is the additive in cigarettes and what does it do
nicotene, where the carbon monoxide binds irreversibly to the red blood cells making them useless
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what is the difference between breathing and respiration
respiration is a chemical reaction releasing energy from food, but breathing is the movement of air in and out of lungs
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what is a diaphragm
a sheet of muscle under your thorax
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explain the relationship between pressure and volume
the bigger the volume the smaller the pressure
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when we breathe in and out what happens to the intercostal muscle and diaphragm
in: muscles contract diaphragm down out: muscles relax diaphragm up
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what are the adaptations of the alveoli to maximise gas exchange
large surface area, thin, blood vessels close together
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why are there rings of cartilage around the trachea
to support it and so it is kept in place
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what does the cilia do
collect the dust when we breathe so it doesn't go into our lungs
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what are the adaptations of the small intestines
long so increase surface area, micro villi and a good blood supply
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Card 2

Front

what are carcinogens

Back

a group of chemicals that cause cancer

Card 3

Front

what is the additive in cigarettes and what does it do

Back

Preview of the front of card 3

Card 4

Front

what is the difference between breathing and respiration

Back

Preview of the front of card 4

Card 5

Front

what is a diaphragm

Back

Preview of the front of card 5
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