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Question
Which of the following sinuses are considered to be paranasal sinuses?I. Maxillary
II. Frontal
III. Ethmoid
IV. Sphenoid
a. I. II. III, and IV
b. I, II, and III only
c. I. III, and IV only
d. I and II only
Answer
This answer is hidden. It contains 309 characters.
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