patrineym4onky
patrineym4onky patrineym4onky
  • 19-03-2016
  • Health
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What protect and keep the airway open in your lungs?

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SmarticalParticals
SmarticalParticals SmarticalParticals
  • 19-03-2016
The airway to and inside your lungs are lined with rings made of cartilage that keep the airway open.
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