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tensor veli palatini
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The dilator tubae portion of tensor veli palatini pulls the membranous wall of the auditory tube away from the cartilaginous wall to equalize pressure between the middle ear and the nasopharynx. This is why airplane passengers chew gum (to prevent ear popping).

Recall:
Stern’s law #1: Muscles containing the word “tensor” are innervated by the mandibular division of the trigeminal nerve (V3).
Stern’s law #2: Muscles containing the word “palat” are innervated by the vagus nerve, unless law 1 takes precedence.
Stern’s law #3: Muscles containing the word “glossus” are innervated by the hypoglossal nerve, unless law 1 or 2 takes precedence.
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