Base of Skull Foramina

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Questions and Answers

Which cranial nerve passes through the Foramen Rotundum?

  • Maxillary nerve (V2) (correct)
  • Ophthalmic nerve (VI)
  • Optic Nerve
  • Mandibular nerve (V3)

A lesion affecting the hypoglossal nerve would most likely impact motor function of which structure?

  • The tongue (correct)
  • The soft palate
  • The inner ear
  • The eye muscles

Which of the following structures does NOT pass through the jugular foramen?

  • Sigmoid Sinus
  • Vagus Nerve
  • Oculomotor Nerve (correct)
  • Accessory Nerve

Following a traumatic injury, a patient exhibits impaired balance and hearing. Which foramen is most likely involved in the injury?

<p>Internal Acoustic Meatus (B)</p> Signup and view all the answers

Which artery passes through the optic canal?

<p>Ophthalmic artery (D)</p> Signup and view all the answers

Which of the following foramina transmits the mandibular nerve (V3)?

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

If a patient presents with vertigo, which artery passing through the base of the skull might be implicated?

<p>Labyrinthine artery (C)</p> Signup and view all the answers

Which foramen allows passage of structures related to both hearing and balance?

<p>Internal Acoustic Meatus (C)</p> Signup and view all the answers

Which of these passes through the carotid canal?

<p>Internal Carotid Artery (B)</p> Signup and view all the answers

A patient has difficulty shrugging their shoulders and turning their head. Which foramen may be affected?

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

Through which foramen does the nerve responsible for the sensation of the lower face pass?

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

Which foramen transmits the nerve responsible for motor control of the lateral rectus muscle of the eye?

<p>Superior Orbital Fissure (C)</p> Signup and view all the answers

Damage to structures passing through the foramen spinosum would most likely result in:

<p>Meningeal Bleeding (A)</p> Signup and view all the answers

Which foramen is associated with the passage of the medulla oblongata?

<p>Foramen Magnum (C)</p> Signup and view all the answers

Which cranial nerve exits the skull through the superior orbital fissure and innervates the superior oblique muscle of the eye?

<p>Trochlear nerve (D)</p> Signup and view all the answers

A patient reports loss of taste sensation on the posterior third of their tongue. Which nerve, passing through the jugular foramen, is most likely affected?

<p>Glossopharyngeal nerve (C)</p> Signup and view all the answers

Which of the following structures passes through the optic canal?

<p>Optic nerve (A)</p> Signup and view all the answers

A surgeon is performing a procedure near the foramen lacerum. Which nerve is at greatest risk of injury?

<p>Greater petrosal nerve (D)</p> Signup and view all the answers

Which of the following nerves that pass through the skull is responsible for motor innervation of the muscles of facial expression?

<p>Facial nerve (C)</p> Signup and view all the answers

Which foramen transmits both arterial and venous blood vessels?

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

Flashcards

Optic Canal

Contains the optic nerve and ophthalmic artery.

Foramen Rotundum

Transmits the maxillary nerve (V2).

Foramen Ovale

Transmits the mandibular nerve (V3), accessory meningeal artery, and lesser petrosal nerve.

Foramen Lacerum

Contains the greater petrosal nerve.

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Jugular Foramen

Transmits the inferior petrosal sinus, glossopharyngeal nerve, vagus nerve, accessory nerve, sigmoid sinus and posterior meningeal artery.

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Superior Orbital Fissure

Transmits the oculomotor nerve, trochlear nerve, ophthalmic nerve (VI), abducens nerve and superior ophthalmic vein.

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Foramen Spinosum

Contains the middle meningeal artery and vein, and meningeal branch of mandibular nerve

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Carotid Canal

Transmits the internal carotid artery and nerve plexus.

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Internal Acoustic Meatus

Contains the facial nerve, vestibulocochlear nerve, and labyrinthine artery.

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Hypoglossal Canal

Transmits the hypoglossal nerve.

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Foramen Magnum

Contains the medulla oblongata, vertebral arteries, and spinal roots of accessory nerves

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Study Notes

  • Base of the skull contains foramina.

Optic Canal

  • Optic nerve and ophthalmic artery run through it.

Foramen Rotundum

  • Maxillary nerve V2 runs through it.

Foramen Ovale

  • Mandibular nerve V3, accessory meningeal artery, and lesser petrosal nerve run through it.

Foramen Lacerum

  • Greater petrosal nerve runs through it.

Jugular Foramen

  • Inferior petrosal sinus, glossopharyngeal nerve, vagus nerve, accessory nerve, sigmoid sinus, and posterior meningeal artery run through it.

Hypoglossal Canal

  • Hypoglossal nerve runs through it.

Foramen Magnum

  • Medulla oblongata, vertebral arteries, and spinal roots of accessory nerves run through it.

Superior Orbital Fissure

  • Oculomotor nerve, trochlear nerve, ophthalmic nerve VI, abducens nerve, and superior ophthalmic vein run through it.

Foramen Spinosum

  • Middle meningeal artery and vein, and meningeal branch of mandibular nerve run through it.

Carotid Canal

  • Internal carotid artery and nerve plexus run through it.

Internal Acoustic Meatus

  • Facial nerve, vestibulocochlear nerve, and labyrinthine artery run through it.

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