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
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
A 50-year-old man is brought in by ambulance to the emergency department with difficulty breathing and speaking. His wife reports that he might have swallowed a fishbone. While taking his history the patient develops a paroxysmal cough. Visualization of his oropharynx and larynx shows a fishbone lodged in the right piriform recess. After successfully removing the fishbone the patient feels comfortable, but he is not able to cough like before. Damage to which of the following nerves is responsible for the impaired cough reflex in this patient?
AInferior laryngeal nerve
BInternal laryngeal nerve
CExternal laryngeal nerve
DSuperior laryngeal nerve
ERecurrent laryngeal nerve
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