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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