The gaseous exchange system in mammals

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What are the lungs in humans?
Exchange organs
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What is in the gaseous exchange system?
ribs, lung, diaphragm, intercostal muscles
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How does this work?
As you breathe in, air enters the trachea. This splits two bronchi. Each bronchus leads off into smaller tubes called bronchioles. These end in small air sacs called alveoli where gases are exchanged.
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What are the 5 structures in the gaseous exchange system
Goblet cells secrete mucus, cilia beat the mucus, elastic fibres help us breathe out, smooth muscle allows the diameter to be controlled, rings or cartilage provide support
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What are the 4 parts of the lung?
Trachea, bronchi, bronchioles, alveoli
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Card 2

Front

What is in the gaseous exchange system?

Back

ribs, lung, diaphragm, intercostal muscles

Card 3

Front

How does this work?

Back

Preview of the front of card 3

Card 4

Front

What are the 5 structures in the gaseous exchange system

Back

Preview of the front of card 4

Card 5

Front

What are the 4 parts of the lung?

Back

Preview of the front of card 5

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