Frontal nerve

Frontal nerve
Dissection showing origins of right ocular muscles, and nerves entering by the superior orbital fissure.
Nerves of the orbit. Seen from above.
Details
From	Ophthalmic nerve
To	supratrochlear nerve and the supraorbital nerve
Identifiers
Latin	nervus frontalis
TA	A14.2.01.020
FMA	52638
Anatomical terms of neuroanatomy [edit on Wikidata]

The frontal nerve is the largest branch of the ophthalmic nerve(V₁), and may be regarded, both from its size and direction, as the continuation of the nerve.

It enters the orbit through the superior orbital fissure, not running within the tendinous ring, and runs forward between the Levator palpebræ superioris and the periosteum.

Midway between the apex and base of the orbit it divides into two branches, supratrochlear nerve and supraorbital nerve.

Functions

It provides the sensory innervations for the skin of the forehead, mucosa of frontal sinus, and the skin of the upper eyelid via General Somatic Afferent (GSA) fibers.

Additional images

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  Nerves of the orbit, and the ciliary ganglion. Side view.

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  Frontal nerve

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  Extrinsic eye muscle. Nerves of orbita. Deep dissection.

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  Extrinsic eye muscle. Nerves of orbita. Deep dissection.

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  Extrinsic eye muscle. Nerves of orbita. Deep dissection.

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  Extrinsic eye muscle. Nerves of orbita. Deep dissection.

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  Extrinsic eye muscle. Nerves of orbita. Deep dissection.

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  Extrinsic eye muscle. Nerves of orbita. Deep dissection.

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  Extrinsic eye muscle. Nerves of orbita. Deep dissection.

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  Frontal nerve.Deep dissection.Superior view

References

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

External links

• Anatomy photo:29:02-0103 at the SUNY Downstate Medical Center
• lesson3 at The Anatomy Lesson by Wesley Norman (Georgetown University) (orbit2)
• cranialnerves at The Anatomy Lesson by Wesley Norman (Georgetown University) (V)