External nasal nerve

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Nerve: External nasal nerve
Sensory areas of the head, showing the general distribution of the three divisions of the fifth nerve. (Nasal nerve labeled at center left.)
The sphenopalatine ganglion and its branches.
Latin rami nasales externi nervi infraorbitalis
Gray's p.891
Innervates nose
From ophthalmic nerve (anterior ethmoidal nerve)

The external nasal branches (or external nasal nerve) are terminal branches of the anterior ethmoidal nerves (from the ophthalmic division of the trigeminal nerve, CN V), and provide sensory innervation to the skin of the lower half of the nose and of the septum mobile nasi.

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This article incorporates text from a public domain edition of Gray's Anatomy.