What does the maxillary division become as it occupies the infraorbital groove?

• A. Infraorbital nerve, then a branch of the MSA
• B. Zygomatic nerve
• C. PSA nerve
• D. Nasopalatine nerve

Answer: (A)

As the maxillary division travels through the infraorbital groove, it continues as the infraorbital nerve. This is the main continuation of V2 in that path. Within the infraorbital canal, the infraorbital nerve typically gives off a branch that becomes the middle superior alveolar nerve. That branch supplies the premolars (and often the mesiobuccal root of the first molar), so the sequence is maxillary division → infraorbital nerve → branch of the middle superior alveolar nerve. The other options don’t fit because the zygomatic nerve goes toward the zygoma, the PSA nerve branches off in the pterygopalatine area rather than in the infraorbital groove, and the nasopalatine nerve runs in the nasal cavity.