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What are four principle functions of the respiratory system?

What are four principle functions of the respiratory system?
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What are four principle functions of the respiratory system?

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User Vinczemarton
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2 Answers

1 vote
external  is one of them
answered
User Angel OfDemons
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7.5k points
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1. External respiration exchanges gases between bloodstream and lungs
2. Internal respiration exchanges gases between bloodstream and body tissue.
3. Air vibrating in vocal cords causes sound
4. Olfaction.
answered
User Woestijnrog
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