B. Regulate the Ph of the body fluids
Answer:
The correct option is: c. Mandibular
Explanation:
Paranasal sinuses are the hollow air-filled spaces present between the bones of the skull and the bones of the face, surrounding the nasal cavity.
The four paranasal sinuses are: maxillary sinuses (present under the eyes), frontal sinuses (present above the eyes) , ethmoidal sinuses (present between the eyes), sphenoidal sinuses (present behind the eyes).
<u>Therefore, Mandibular is </u><u>not</u><u> a paranasal sinus.</u>
Answer:
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