Which branch of the infraorbital nerve supplies the skin and mucous membranes of the upper lip?

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Dive into the Pertinent Anatomy of Maxillary Local Anesthesia Test. Study with comprehensive flashcards and multiple choice questions. Each question provides hints and explanations. Prepare for your exam success!

Multiple Choice

Which branch of the infraorbital nerve supplies the skin and mucous membranes of the upper lip?

Explanation:
The branch that supplies the skin and mucous membrane of the upper lip is the superior labial nerve. After the infraorbital nerve exits the infraorbital foramen, it branches to the midface, and the superior labial nerve specifically travels to the upper lip, providing sensation to its skin and the mucosa of the upper lip and vestibule. The other branches have different targets: the zygomaticotemporal goes toward the temple region, the infraorbital nerve proper refers to the main trunk before its targeted cutaneous branches, and the lower lip is supplied by nerves from the mental/inferior alveolar area.

The branch that supplies the skin and mucous membrane of the upper lip is the superior labial nerve. After the infraorbital nerve exits the infraorbital foramen, it branches to the midface, and the superior labial nerve specifically travels to the upper lip, providing sensation to its skin and the mucosa of the upper lip and vestibule. The other branches have different targets: the zygomaticotemporal goes toward the temple region, the infraorbital nerve proper refers to the main trunk before its targeted cutaneous branches, and the lower lip is supplied by nerves from the mental/inferior alveolar area.

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