B3 1.5: Ventilating the lungs

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  • Created by: JSpencer
  • Created on: 03-03-16 18:58
What do the lungs contain?
The exchange surface of the breathing system.
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Where are the lungs situated?
In the thorax, inside the ribcage and above the diaphram.
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What does the diaphram seperate the lungs from?
The abdomen.
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Stages to breathing in: (6)
Intercostal muscles contract, ribs move up and out, diaphragm contracts and flattens, volume of chest increases, pressure in chest decreases and air is drawn in.
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Stages to breathing out: (6)
Intercostal muscles relax, ribs move down and in, diaphragm relaxes and moves up, volume of chest decreases, pressure inside the chest increases and air is forced out the lungs.
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What is the movemnt in and out of the lungs called?
Ventilation.
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Other cards in this set

Card 2

Front

Where are the lungs situated?

Back

In the thorax, inside the ribcage and above the diaphram.

Card 3

Front

What does the diaphram seperate the lungs from?

Back

Preview of the front of card 3

Card 4

Front

Stages to breathing in: (6)

Back

Preview of the front of card 4

Card 5

Front

Stages to breathing out: (6)

Back

Preview of the front of card 5
View more cards

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