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482.Which of the following is a derivative of the second pharyngeal arch?

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A. Eustachian tube
B. External auditory meatus
C. Palatine tonsil
D. Stylohyoid muscle
The correct answer is D. The stylohyoid is derived from the second pharyngeal arch, which also
gives rise to the muscles of facial expression, the stapedius, the posterior belly of the digastric
muscle, Reichert's cartilage, and the facial nerve.

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