External nasal nerve

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

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.
Fromophthalmic nerve (anterior ethmoidal nerve)
LatinRami nasales externi nervi infraorbitalis
Anatomical terms of neuroanatomy

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This article incorporates text in the public domain from page 891 of the 20th edition of Gray's Anatomy (1918)

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