B3, Gaseous exchange in the lungs

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  • Created by: emmajane_
  • Created on: 19-04-14 17:26
What are the two functions of the lungs?
1. Ventilation. 2. Gas exchange
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What is ventilation in the lungs?
The movement of air in and out of the lungs
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What is gas exchange in the lungs?
The swapping of gasses between the alveolar air and the blood
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Where are the lungs located?
In the upper part of your body called the thorax
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What are the lungs surrounded by and what is the purpose of it?
1. Ribs and intercostal muscle. 2. Intercostal muscle plays a role in ventilating the lungs
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What is step 1 in inhaling?
1. Intercostal muscle contracts, expanding the ribcage upwards and outwards
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What is step 2 in inhaling?
2. Diaphragm contracts, increaing the volume of the chest
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What is step 3 in inhaling?
3. Pressure inside the lungs is lovered and air is sucked into the lungs
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What is step 1 of exhaling?
1. Your intercostal muscles relax And the ribcage drops inwards and downwards
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What is step 2 of exhaling?
The diaphragm relaxes, moving back upwards, decreasing the volume of the chest
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What is step 3 of exhaling?
Pressure inside the chest increases and air is forced out
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What are the two types of ventilators?
Positive pressure ventilator and negative pressure ventilator
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Other cards in this set

Card 2

Front

What is ventilation in the lungs?

Back

The movement of air in and out of the lungs

Card 3

Front

What is gas exchange in the lungs?

Back

Preview of the front of card 3

Card 4

Front

Where are the lungs located?

Back

Preview of the front of card 4

Card 5

Front

What are the lungs surrounded by and what is the purpose of it?

Back

Preview of the front of card 5
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