Hollow sinuses act to lighten the bones of the skull and serve as resonating chambers for speech.

Name: Hollow sinuses act to lighten the bones of the skull and serve as resonating chambers for speech.
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Hollow sinuses, such as the maxillary and frontal sinuses, are air-filled spaces in the facial bones that help to reduce the weight of the skull. They also serve as resonating chambers for speech and contribute to the quality and tone of a person's voice.

Hollow Sinuses Act to Lighten the Bones of the Skull