Sensory innervation to the philtrum comes from the ______ nerve.
Understand the Problem
The question is asking to identify the nerve responsible for the sensory innervation to the philtrum, which is an anatomical feature located in the middle of the upper lip.
Answer
Trigeminal nerve (CN V).
The final answer is the trigeminal nerve.
Answer for screen readers
The final answer is the trigeminal nerve.
More Information
Sensory innervation to the philtrum specifically comes from branches of the maxillary division of the trigeminal nerve, also known as cranial nerve V.
Tips
Mistaking the specific branch of the trigeminal nerve for general innervation might lead to confusion. Make sure to distinguish the different branches and their specific areas of innervation.
Sources
- Anatomy, Head and Neck, Lips - StatPearls - NCBI Bookshelf - ncbi.nlm.nih.gov
- Lips and Perioral Region Anatomy: Overview - Medscape - emedicine.medscape.com
- The Maxillary Division of the Trigeminal Nerve (CNV2) - teachmeanatomy.info
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