Mandibular Nerve (CN V3)

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Questions and Answers

Which nerve supplies the skin of the auricle, the external auditory meatus, and conveys postganglionic parasympathetic secretomotor fibers from the otic ganglion to the parotid salivary gland?

  • Auriculotemporal nerve (correct)
  • Lingual nerve
  • Mental nerve
  • Buccal nerve

Which division of CN V carries motor fibers?

  • Maxillary nerve (CN V2)
  • Mandibular nerve (CN V3) (correct)
  • Abducens nerve (CN VI)
  • Ophthalmic nerve (CN V1)

Which nerve descends in front of and medial to the inferior alveolar nerve, enters the mouth, runs forward on the side of the tongue, and supplies the mucous membrane of the anterior two thirds of the tongue and the floor of the mouth?

  • Lingual nerve (correct)
  • Auriculotemporal nerve
  • Buccal nerve
  • Mental nerve

Which nerve descends in front of and medial to the inferior alveolar nerve, enters the mouth, runs forward on the side of the tongue, and supplies the mucous membrane of the anterior two thirds of the tongue and the floor of the mouth?

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

Where does the mandibular nerve emerge from to enter the infratemporal fossa?

<p>Foramen ovale in the greater wing of the sphenoid (B)</p> Signup and view all the answers

Which nerve supplies motor fibers to the muscles of mastication?

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

Which division of CN V carries motor fibers?

<p>Mandibular division (C)</p> Signup and view all the answers

Which nerve supplies the skin of the auricle, the external auditory meatus, and conveys postganglionic parasympathetic secretomotor fibers from the otic ganglion to the parotid salivary gland?

<p>Auriculotemporal nerve (B)</p> Signup and view all the answers

Where does the mandibular nerve emerge from to enter the infratemporal fossa?

<p>Foramen ovale in greater wing of sphenoid (C)</p> Signup and view all the answers

Flashcards

What is the auriculotemporal nerve?

A branch of the mandibular nerve (CN V3) that carries sensory information from the skin of the auricle (outer ear) and the external auditory meatus, as well as parasympathetic fibers to the parotid salivary gland.

What is the mandibular nerve (CN V3)?

A division of the trigeminal nerve (CN V) that carries motor fibers to the muscles of mastication (chewing) and provides sensory innervation to the lower face and teeth.

What is the lingual nerve?

A branch of the mandibular nerve that provides sensory innervation to the anterior two-thirds of the tongue (taste and touch) and the floor of the mouth.

Where does the mandibular nerve exit the skull?

The foramen ovale is an opening in the greater wing of the sphenoid bone which allows the mandibular nerve (CN V3) to pass from the cranial cavity into the infratemporal fossa.

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What is the motor function of the mandibular nerve?

The mandibular nerve (CN V3) carries motor fibers to the muscles of mastication, which are involved in chewing.

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Which division of the trigeminal nerve carries motor fibers?

The mandibular nerve (CN V3), a division of the trigeminal nerve (CN V), is responsible for carrying motor fibers.

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Study Notes

Nerve Functions and Pathways

  • The auriculotemporal nerve supplies the skin of the auricle, the external auditory meatus, and conveys postganglionic parasympathetic secretomotor fibers from the otic ganglion to the parotid salivary gland.

Mandibular Nerve

  • The mandibular nerve emerges from the foramen ovale to enter the infratemporal fossa.
  • It supplies motor fibers to the muscles of mastication.

Lingual Nerve

  • The lingual nerve descends in front of and medial to the inferior alveolar nerve, enters the mouth, and runs forward on the side of the tongue.
  • It supplies the mucous membrane of the anterior two thirds of the tongue and the floor of the mouth.

Trigeminal Nerve (CN V)

  • The mandibular division (V3) carries motor fibers.
  • The mandibular division (V3) supplies motor fibers to the muscles of mastication.

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