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Nerve: Mandibular nerve
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Mandibular division of the trifacial nerve.
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Mandibular division of trifacial nerve, seen from the middle line. The small figure is an enlarged view of the otic ganglion.
Latin n. mandibularis
Gray's subject #200 893
Innervates
From trigeminal nerve
To
MeSH A08.800.800.120.760.500

The mandibular nerve (V3) is the largest of the three branches of the trigeminal nerve.

Structure[edit | edit source]

Roots[edit | edit source]

It is made up of two roots:

  • a large sensory root proceeding from the inferior angle of the trigeminal ganglion.
  • a small motor root (the motor part of the trigeminal), which passes beneath the ganglion, and unites with the sensory root, just after its exit through the foramen ovale.

Path[edit | edit source]

The two roots (sensory and motor) exit the middle cranial fossa through the foramen ovale. The two roots then combine. The nerve descends, soon splitting into an anterior division and a posterior division.

Immediately beneath the base of the skull, the nerve gives off from its medial side a recurrent branch (nervus spinosus) and the nerve to the medial pterygoid muscle, and then divides into two trunks, an anterior and a posterior.

Branches[edit | edit source]

The mandibular nerve gives off the following branches:

The mandibular nerve also gives off branches to the otic ganglion

Supplies[edit | edit source]

The mandibular nerve innervates:

See also[edit | edit source]

Additional images[edit | edit source]

External links[edit | edit source]



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