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Frontal sinuses are air-filled cavities located in the frontal bone of the skull, above the eyes, and are part of the paranasal sinus system. They play a role in humidifying and filtering the air we breathe, as well as contributing to voice resonance and reducing the weight of the skull.
The zygomatic arch is a bony structure on the side of the skull that forms the prominence of the cheek and serves as an attachment point for muscles involved in chewing. It is formed by the temporal process of the zygomatic bone and the zygomatic process of the temporal bone, playing a crucial role in facial structure and function.
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