Anatomy & Histology · single question
Which nerve is responsible for innervating the upper first permanent premolar?
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Correct answer: B. Middle superior alveolar nerve
- A. The posterior superior alveolar nerve innervates the maxillary molars (except the mesiobuccal root of the first molar).
- B. Correct. The middle superior alveolar nerve (MSA) innervates the maxillary premolars and the mesiobuccal root of the first molar.
- C. The anterior superior alveolar nerve innervates the maxillary central and lateral incisors and canines.
- D. The inferior alveolar nerve innervates mandibular teeth, not maxillary premolars.
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