Nasociliary nerve

The ulnar nasociliary (from Latin nasus "nose" and cilium " eyelash", " eyelid ") is a branch of the ophthalmic nerve, which in turn is a branch of the fifth cranial nerve ( trigeminal nerve ) is. He crosses over the optic nerve from lateral to medial and divides at the nose-side wall of the orbit in three branches: Nervi ethmoidales, the nerve infratrochlearis and Nervi ciliares longi.

Nervi ethmoidal posterior and anterior

The Nervi ethmoidal posterior and anterior pull through the foramina ethmoidalia posterior and anterior to the mucous membrane of the posterior ethmoidal cells ( Cellulae ethmoidal posterior ) and the sphenoid sinus ( posterior branch) or into the cranial cavity back ( anterior branch) and then through the cribriform plate (lamina cribrosa ) to the nasal mucosa ( Ramus nasalis medialis, ramus nasalis lateralis).

They supply the nasal mucosa sensitive. The anterior ethmoidal nerve ends as Ramus nasalis externus (leading towards the nose tip). In domestic mammals of the ethmoidal nerve is not divided posteriorly and anteriorly in Ramus. However, the terminal branches behave similarly.

Nerve infratrochlearis

The ulnar infratrochlearis pulls beneath the rolling cartilage ( hence the name) to the nasal canthus and innervates the local structures, especially the tear ducts, the Tränenkarunkel, the nictitating membrane and the upper eyelid.

In nerve infratrochlearis also run parasympathetic fibers of the oculomotor nerve, which enter via the ciliary ganglion to him and the power the accessory lacrimal glands. In the horse, the nerve infratrochlearis innervates the frontal sinus, in the goat horn.

Nervi ciliares longi et breves

The Nervi ciliares longi et breves occur to the optic nerve around through the sclera into the eyeball. They supply the average eyeball ( choroid, ciliary body, iris ), the cornea and the conjunctiva. The Nervi short ciliary pull him across the ciliary ganglion.

Hutchinson sign

As Hutchinson sign the act of a herpes zoster on the nose is described. Since the tip of the nose from nasociliary nerve innervated and this is a branch of the ophthalmic nerve, it is suspected that an ophthalmic zoster is present. The Hutchinson sign should not be confused with the Hutchinson 's triad.