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frontal sinus
- LOCATION: in the low-center of forehead
- FUNCTION: to include warming, moistening, and filtering inspired air and maximizing voice quality, and provide some protection from facial and head trauma and minimize the total weight of the skull
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ethmoid sinus
- LOCATION: between the eyes, at the nasal bridge
- FUNCTION: to provide lubrication (mucus) to the inner nose, reduce the skull's weight and make one's voice more resonant as they grow in size during puberty
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sphenoid sinus
- LOCATION: in bones behind the nasal cavity
- FUNCTION: to lighten the weight of the skull, and may provide some cushioning from impacts to protect the brain and a route for drainage of mucus
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maxillary sinus
- LOCATION: the largest, in the cheekbones
- FUNCTION: contribute to the resonance of the voice, have some olfactory function, reduce the weight of the skull, and humidify inspired air
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nasal conchae
to create turbulence in the air to trap small particulates in mucus
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