# What is the most superior point of the external auditory canal?
A. Sella
B. Porion
C. Basion
D. Orbitale
The correct answer is B. Porion.
The porion is the most superior point of the external auditory canal. The sella is the center of the hypophyseal fossa. The basion is the most anterior point of the foramen magnum. The orbitale is the most inferior point of the infraorbital rim.
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