Final answer:
The cavity or hollow space described is a paranasal sinus, an air-filled space in certain skull bones connected to the nasal cavity and divided by the nasal septum.
Step-by-step explanation:
A cavity or hollow space; an air-filled chamber found in some skull bones refers to the paranasal sinuses. These are air-filled spaces located within the frontal, maxilla, sphenoid, and ethmoid bones of the skull that are connected to the nasal cavity.
The paranasal sinuses include the frontal, maxillary, sphenoidal, and ethmoidal sinuses, which serve to warm and humidify incoming air, produce mucus, and lighten the weight of the skull. They are divided at the midline by the nasal septum and they contribute to the resonance of the voice.