The paranasal sinuses are ________. a. air-filled spaces found within the frontal
Chapter 7, Problem 13(choose chapter or problem)
The paranasal sinuses are ________. a. air-filled spaces found within the frontal, maxilla, sphenoid, and ethmoid bones only b. air-filled spaces found within all bones of the skull c. not connected to the nasal cavity d. divided at the midline by the nasal septum
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