Answer to last question - D. Lingual Frenulum. The openings of the submandibular ducts reside on either side of the lingual frenulum, and the saliva produced by the submandibular glands drains through the sublingual caruncles (or papillae), openings at the base of the lingual frenulum. 

57-year-old woman presents with right unilateral facial paralysis and dizziness. During an examination, the physician also notes a loss of hearing on the right side. An MRI of the patient’s head reveals a brain tumor, as noted by the asterisk in the figure. Based upon the patient’s presentation and MRI, where is the tumor located? 

1. (A)  Foramen rotundum

2. (B)  Foramenovale

3. (C)  Internal acoustic meatus

4. (D)  Facial canal

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