Overview of Cranial Nerves and Functions
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Questions and Answers

What is the mnemonic used for cranial nerves?

  • On Occasion Oliver Tries To Anally F*** Various Guys. Vaginas Are History! (correct)
  • All Good Students Prefer Meat
  • Every Alphabet Has Different Names
  • None of the above

What is Cranial Nerve 1 (CN1)?

Olfactory Nerve

What is Cranial Nerve 2 (CN2)?

Optic Nerve

What is Cranial Nerve 3 (CN3)?

<p>Oculomotor Nerve</p> Signup and view all the answers

What is Cranial Nerve 5 (CN5)?

<p>Trigeminial Nerve</p> Signup and view all the answers

What is Cranial Nerve 6 (CN6)?

<p>Abducens Nerve</p> Signup and view all the answers

What is Cranial Nerve 7 (CN7)?

<p>Facial Nerve</p> Signup and view all the answers

What is Cranial Nerve 8 (CN8)?

<p>Vestibulocochlear Nerve</p> Signup and view all the answers

What is Cranial Nerve 9 (CN9)?

<p>Glossopharyngeal Nerve</p> Signup and view all the answers

What is Cranial Nerve 10 (CN10)?

<p>Vagus Nerve</p> Signup and view all the answers

What is Cranial Nerve 11 (CN11)?

<p>Accessory Nerve / Spinal Accessory Nerve</p> Signup and view all the answers

What is Cranial Nerve 12 (CN12)?

<p>Hypoglossal Nerve</p> Signup and view all the answers

What is the opening for Cranial Nerve 1 (CN1)?

<p>Cribiform Plate (D)</p> Signup and view all the answers

What is the opening for Cranial Nerve 2 (CN2)?

<p>Optic Canal (D)</p> Signup and view all the answers

What is the opening for Cranial Nerve 5 (CN5)?

<p>Foramen Ovale (A)</p> Signup and view all the answers

What is the opening for Cranial Nerve 9, 10 & 11?

<p>Jugular Foramen (B)</p> Signup and view all the answers

What is the mnemonic for CN Foramina?

<p>Cleaners Only Spray Smelly Stuff Right on Stupid Idiots In Jumbled Junkyards Juggled High (A)</p> Signup and view all the answers

Flashcards

CN1

Olfactory Nerve; responsible for smell.

CN2

Optic Nerve; vision.

CN3

Oculomotor Nerve; eye movement & pupil.

CN4

Trochlear Nerve; superior oblique eye muscle.

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CN5

Trigeminal Nerve; facial sensation.

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CN6

Abducens Nerve; lateral eye movement.

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CN7

Facial Nerve; facial expressions & taste.

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CN8

Vestibulocochlear Nerve; hearing & balance.

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CN9

Glossopharyngeal Nerve; tongue sensation & swallowing.

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CN10

Vagus Nerve; heart, lungs, & digestive tract.

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CN11

Accessory Nerve; neck muscles (SCM & Traps).

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CN12

Hypoglossal Nerve; tongue movement.

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Cranial Nerve Openings

Channels for cranial nerves to pass through the skull.

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Cribriform Plate

Skull bone where CN1 passes.

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Optic Canal

Skull bone where CN2 passes.

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Superior Orbital Fissure

Skull bone where CN3, CN4, and CN6 pass.

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Foramen Rotundum

Skull opening; part of CN5.

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Foramen Ovale

Skull opening; part of CN5.

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Internal Acoustic Meatus

Skull bone where CN7 and CN8 pass.

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Jugular Foramen

Skull opening; CN9, CN10, and CN11 pass through.

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Hypoglossal Canal

Skull opening; for CN12.

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Study Notes

Cranial Nerves Overview

  • There are twelve pairs of cranial nerves, numbered CN1 through CN12.
  • Each cranial nerve has specific functions primarily related to sensation, motor control, and autonomic functions.

Cranial Nerve Mnemonic

  • A memorable phrase helps recall the order of cranial nerves: "On Occasion Oliver Tries To Anally F*** Various Guys. Vaginas Are History!"

Cranial Nerves and Functions

  • CN1: Olfactory Nerve - responsible for sense of smell.
  • CN2: Optic Nerve - responsible for vision.
  • CN3: Oculomotor Nerve - controls eye movements and pupil constriction.
  • CN4: Trochlear Nerve - controls the superior oblique muscle of the eye.
  • CN5: Trigeminal Nerve - sensation to the face; divided into ophthalmic, maxillary, and mandibular branches.
  • CN6: Abducens Nerve - controls lateral rectus muscle for outward eye movement.
  • CN7: Facial Nerve - controls muscles of facial expression and taste sensations.
  • CN8: Vestibulocochlear Nerve - responsible for hearing and balance.
  • CN9: Glossopharyngeal Nerve - taste and general sensory from the posterior third of the tongue and contributes to swallowing.
  • CN10: Vagus Nerve - provides parasympathetic control over the heart, lungs, and digestive tract.
  • CN11: Accessory Nerve - supplies sternocleidomastoid and trapezius muscles.
  • CN12: Hypoglossal Nerve - controls the muscles of the tongue for speech and swallowing.

Cranial Nerve Openings (Foramina)

  • CN1: Passes through the Cribiform Plate.
  • CN2: Passes through the Optic Canal.
  • CN3 and CN4: Pass through the Superior Orbital Fissure.
  • CN5: Has multiple openings - Superior Orbital Fissure, Foramen Rotundum, and Foramen Ovale.
  • CN6: Passes through the Superior Orbital Fissure.
  • CN7 and CN8: Pass through the Internal Acoustic Meatus.
  • CN9, CN10, and CN11: Pass through the Jugular Foramen.
  • CN12: Passes through the Hypoglossal Canal.

Additional Mnemonic for Cranial Nerve Openings

  • Another phrase to help remember cranial nerve openings: "Cleaners Only Spray Smelly Stuff Right on Stupid Idiots In Jumbled Junkyards Juggled High."

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Description

This quiz covers essential information about the twelve pairs of cranial nerves, including their functions and a mnemonic for easy recall. Each nerve plays a crucial role in sensory and motor control, affecting various body functions. Test your knowledge of these vital nerves and their significance.

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