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What is the primary function of the nasal cavity in the respiratory system?

Practice Questions

Q1
What is the primary function of the nasal cavity in the respiratory system?
  1. Gas exchange
  2. Air filtration and humidification
  3. Sound production
  4. Olfaction

Questions & Step-by-Step Solutions

What is the primary function of the nasal cavity in the respiratory system?
  • Step 1: Understand that the nasal cavity is a space inside your nose.
  • Step 2: Know that when you breathe in, air enters through the nostrils into the nasal cavity.
  • Step 3: Realize that the nasal cavity has tiny hairs and mucus that help filter out dust and germs from the air.
  • Step 4: Learn that the nasal cavity also warms the air to make it closer to body temperature.
  • Step 5: Remember that the nasal cavity adds moisture (humidity) to the air so it doesn't dry out your lungs.
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