Oculomotor Nerve - The 3rd Cranial Nerve (CN III) - Uncal herniation - Neuroanatomy

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The oculomotor nerve is the third cranial nerve (CN III). CN III is a somatic motor nerve that supplies the levator palpebrae superioris (including sympathetic fibers to Müller muscle), and most of the extraocular muscles (EOM) (superior rectus, medial rectus, inferior rectus, and inferior oblique). It also supplies parasympathetic fibers to the ciliary (ciliaris) muscle (accommodation) and constrictor pupillae muscle (pupillary constriction or miosis). The oculomotor nerve motor nucleus and the Edinger-Wesphall nucleus are located in the midbrain (mesencephalon).
CN III...Oculomotor Nerve...Cranial Nerve 3 (CN III) - Oculomotor Nerve Palsy, Uncal Herniation - Neuroanatomy Series.
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4 окт 2024

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Комментарии : 39

@MedicosisPerfectionalis 11 месяцев назад

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@MedicosisPerfectionalis 2 месяца назад

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@MedicosisPerfectionalis 6 месяцев назад

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@chipegonyirenda8238 10 месяцев назад

Cerebral aquedyct of slyvius connects the 3rd ventricle to 4th ventricle( From superior 3rd to inferior 4)

@Hope-gx2wn 6 месяцев назад

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@MedicosisPerfectionalis 6 месяцев назад

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@catarineary Месяц назад

thank you

@chipegonyirenda8238 10 месяцев назад

The cavernous sinus situated on each side of the sphenoid bone in the middle cranial fossa having its insides divided by caverns it contains the folowwing frok superior to interior the oculomotor nerve, trochlear nerve, opthalmic nerve maxillary nerve, trigeminal ganglion these are on the lateral wall on the medual aspect there is internal carotid and abducent nerve

@Godseeker 11 месяцев назад

Thank you 🎉😊

@MedicosisPerfectionalis 11 месяцев назад

You’re very welcome! Thank you for supporting my channel!

@drabrar785 7 месяцев назад

the muscvles which pull eye down and out are superior oblique and lateral rectus . this is seen in cn 3 palsy wherein there is paralysis of all muscles of eye except superior oblique and lateral rectus. so these muscles will make the eye look down and abduct. as for the second question it is trochlear nerve.

@chipegonyirenda8238 10 месяцев назад

Superior orbital fissure contents recurrent meningeal branch of opthalmic artery, lacrimal nerve frontal nerve trochlear nerve, upper and lower divisions of oculomotor nerve nasociliary nerve abducent nerve and inferior opthalmic vein

@MedicosisPerfectionalis 11 месяцев назад

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@zacharyabere9729 11 месяцев назад

Surgical sutures please 😮..if possible

@ayoubbourennane7076 Месяц назад

And What about the olfactif nerve ? Does it belong to the central ou peripheral nervous system ?

@waelfadlallah8939 11 месяцев назад

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@MedicosisPerfectionalis 11 месяцев назад

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@matthewherman5608 11 месяцев назад

If you damage both of the cunei (2xCuneus) then why do you get macular sparing if the reason you usually do is because you have coverage from the ipsilateral and contralateral side?

@NK-jy3lh 10 месяцев назад

@matthewherman5608..macular fibres relay at the tip of visual cortex which is supplied by middle cerebral artery. So there will be macular sparing in PCA stroke which effects visual cortex. If tip of visual cortex is effected which can be due to trauma or any other causes..then we will get defect in the macular field called cookie cutter defect. I don't know accurately whether it's right or not but I have read it somewhere.