Mandibular nerve

&

Otic ganglion

LT

MT

• Muscles

• Nerves

• Vessels

Contents of Infratemporal fossa

Mandibular nerve

• Largest of 3 divisions of trigeminal nerve

• Nerve of 1st branchial arch

• Mixed nerve

• Sensory- trigeminal ganglion, motor- pons

Mandibular nerve

Mandibular nerve

TRUNK

ANTERIOR

DIVISION

POSTERIOR

DIVISION

Branches of Mandibular nerve

From the main trunk

1. Meningeal branch (nervous spinosus)

2. Nerve to medial pterygoid (also supplies

tensor tympani & tensor veli palatini)

MENINGEAL

BRANCH

NERVE TO MEDIAL

PTERYGOID

Branches of Mandibular nerve

From the Anterior division

1. Masseteric nerve

2. Deep temporal nerves

3. Nerve to lateral pterygoid

4. Buccal nerve

MASSETER

TEMPORALIS

LATERAL

PTERYGOID

BUCCAL

NERVE

From the posterior division

1. Auriculo temporal nerve

2. Lingual nerve

3. Inferior alveolar nerve

3b Mylohyoid nerve

AURICULOTEMPORAL

NERVE

INFERIOR ALVEOLAR

NERVE

LINGUAL NERVE

Auriculotemporal nerve

Lingual nerve

Lingual nerve

It comes in direct contact with the mandible

medial to the third molar tooth. Here the nerve

is covered only by the mucous membrane of

the gum, and becomes palpable against the

mandible about 1 cm below and behind the

third molar tooth

Inferior alveolar nerve

Otic ganglion

• Parasympathetic ganglion

• 2-3 mm in size

• Topographically - mandibular nerve,

Functionally - glossopharyngeal nerve

Situation

Connections- Parasympathetic

Connections- Sympathetic

Connections-Motor