Anesthesia · single question
A patient with paresthesia of the lower lip after a procedure: which nerve is responsible?
Show answer and explanation
Correct answer: A. Inferior alveolar nerve (via its mental branch)
Lower-lip sensation is supplied by the mental nerve, the terminal branch of the inferior alveolar nerve; paresthesia of the lower lip points to inferior alveolar/mental nerve involvement.Other options: The lingual nerve supplies the tongue; the facial nerve is motor to facial muscles; the buccal nerve supplies the cheek/buccal gingiva.Key exam takeaway: Lower-lip numbness = inferior alveolar (mental) nerve.