CN V Ophthalmic N: Sensory Flashcards
The ophthalmic n passes through the cavernous sinus and inferior to what 2 nerves?
Oculomotor and trochlear
It is joined by this network for the sympathetic nerves
Internal carotid plexus
Ophthalmic communicates with these 3 nerves for proprioceptive sense
Oculomotor
Trochlear
Abducens
Before the ophthalmic enters the orbit, it gives off this nerve
Tentorial (recurrent meningeal)
The tentorial n adheres to what?
The trochlear n to the tentorium cerebelli
What are the 4 branches of the ophthalmic n?
Tentorial
Lacrimal
Frontal
Nasociliary
Before entering the superior orbital fissure, it divides into which 3 branches?
Lacrimal
Frontal
Nasociliary
Which is the smallest branch of ophthalmic?
Lacrimal
The lacrimal branch receives a branch from the zygomaticotemporal, which is a branch of what nerve?
Zygomatic nerve of the maxillary nerve
The lacrimal nerve in conjunction with zygomaticotemporal is what modality?
Parasympathetic efferent nerve
The lacrimal nerve innervates what?
Lacrimal gland and lateral side of the conjunctiva of the upper eye lid
What is the largest branch of ophthalmic?
Frontal
The frontal nerve enters the orbit and runs forward above what muscle?
Levator palpebra superioris
Midway through the orbit, frontal n divides into what 2 nerves?
Supratrochlear and Supraorbital (larger of 2)
The supratochlear n gives off a descending branch to what nerve?
Infratrochlear n of nasociliary n
When the supratrochlear n emerges on the forehead, it sends fibers to what area?
Medial side of conjunctiva and skin of upper eyelid
The supratrochlear nerve emerges on the face via what opening?
Frontal notch
The supraorbital n emerges on the face via what opening?
Supraorbital notch
The supraorbital n supplies what area?
Skin of the scalp up to the lambdoid suture and frontal sinus mucosa
The nasociliary n gives off what 5 branches?
Anterior ethmoidal branch Ganglionic Long ciliary nerves Infratrochlear nerve Posterior ethmoidal
After the anterior ethmoidal n descends on the side of the crista galli, it enters this cavity
Nasal cavity
The medial internal nasal branch supplies what area?
Front part of the nasal septum
The lateral internal nasal branch supplies what area?
Anterior part of the lateral wall of the nasal cavity
The anterior ethmoidal n emerges as what nerve to supply the ala, apex, and nasal vestibule?
External nasal n
The nasociliary n communicates with the ciliary ganglion through what branch?
Ganglionic branch
This nerve runs between the sclera and choroid to distribute to the ciliary body, iris, and cornea
Long ciliary nerve
The long ciliary n contains sympathetic fibers from where?
Internal carotid plexus
The long ciliary n contains sensory fibers from where?
Nasociliary n
What nerve supplies the medial side of the eyelids skin and side of nose, conjunctiva, lacrimal sac, and the lacrimal caruncle?
Infratrochlear n
What n supplies the ethmoidal and sphenoidal sinuses?
Posterior ethmoidal n
