Which of the following positions demonstrates all the paranasal sinuses? A ParietoacanthialB PA axialC LateralD True PA

Lateral.

Explanation:

Paranasal sinuses may be defined as the air filled sacs that are present four in number and surrounds the nasal cavity. Four sinuses are maxillary sinuses, frontal sinuses, ethmoidal sinuses and sphenoidal sinuses.

The radiography and X ray can be used to determine the positions of paranasal sinuses. The lateral position can demonstrate all the paranasal sinuses.

Thus, the correct answer is option (C).