An otherwise healthy 58-year-old man comes to the physician because of a 1-year history of episodic coughing whenever he cleans his left ear. There is no history of hearing loss, tinnitus, or vertigo. Stimulating his left ear canal with a cotton swab triggers a bout of coughing. The physician informs him that these symptoms are caused by hypersensitivity of a cranial nerve. A peripheral lesion of this nerve is most likely to manifest with which of the following findings on physical examination?
AIpsilateral sensorineural hearing loss
BIpsilateral deviation of the tongue
CInability to raise ipsilateral eyebrow
DDecreased secretion from ipsilateral sublingual gland
EIpsilateral vocal cord palsy
An otherwise healthy 45-year-old man comes to the physician because of a painful ulcer on his tongue for 3 days. Examination shows a shallow, tender 5-mm wide ulcer on the lateral aspect of the tongue, adjacent to his left first molar. There is no induration surrounding the ulcer or cervical lymphadenopathy. A lesion of the cranial nerve responsible for the transmission of pain from this ulcer would most likely result in which of the following?
ALoss of taste from the supraglottic region
BLateral deviation of the tongue
CInability to wrinkle the forehead
DDecreased sensation in the upper lip
ELoss of sensation in the anterior two-thirds of the tongue
A 45-year-old male patient presents with difficulty swallowing and hoarseness that has progressively worsened over the past month. During physical examination, the physician notices that the patient's left vocal cord is paralyzed. The paralysis is most likely due to compression of which of the following nerves?
ALeft superior laryngeal nerve
BLeft vagus nerve
CRight recurrent laryngeal nerve
DLeft recurrent laryngeal nerve
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