Answer
Answer
The trigeminal nerve (cranial nerve V), provides sensory innervation to the face. [2] The second division, the maxillary nerve (V2), exits the skull from the foramen rotundum. After giving off numerous branches, the maxillary nerve eventually enters the face through the infraorbital canal, where it ends as the infraorbital nerve (see image below). The infraorbital nerve supplies sensory branches to the lower eyelid, the side of the nose, and the upper lip.
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Media Gallery
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Infraorbital nerve.
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Area of anesthesia for infraorbital nerve block.
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Intraoral approach for infraorbital nerve block.
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Technique for extraoral infraorbital nerve block.
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Infraorbital nerve block, intraoral approach.
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