The document discusses the mandibular nerve and otic ganglion. It describes the mandibular nerve as the largest of the three divisions of the trigeminal nerve and lists its main branches including the masseteric nerve, deep temporal nerves, nerve to the lateral pterygoid, buccal nerve, auriculotemporal nerve, lingual nerve, and inferior alveolar nerve. It also notes the otic ganglion is a small parasympathetic ganglion located near the mandibular nerve that receives connections from both the glossopharyngeal and sympathetic nerves.

1. Mandibular nerve
&
Otic ganglion

2. LT
MT
• Muscles
• Nerves
• Vessels
Contents of Infratemporal fossa

3. Mandibular nerve
• Largest of 3 divisions of trigeminal nerve
• Nerve of 1st branchial arch
• Mixed nerve
• Sensory- trigeminal ganglion, motor- pons

4. Mandibular nerve

5. Mandibular nerve

6. TRUNK
ANTERIOR
DIVISION
POSTERIOR
DIVISION

7. 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)

8. MENINGEAL
BRANCH
NERVE TO MEDIAL
PTERYGOID

9. Branches of Mandibular nerve
From the Anterior division
1. Masseteric nerve
2. Deep temporal nerves
3. Nerve to lateral pterygoid
4. Buccal nerve

10. MASSETER
TEMPORALIS
LATERAL
PTERYGOID
BUCCAL
NERVE

11. From the posterior division
1. Auriculo temporal nerve
2. Lingual nerve
3. Inferior alveolar nerve
3b Mylohyoid nerve

12. AURICULOTEMPORAL
NERVE
INFERIOR ALVEOLAR
NERVE
LINGUAL NERVE

13. Auriculotemporal nerve

15. Lingual nerve

17. 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

19. Inferior alveolar nerve

21. Otic ganglion

22. • Parasympathetic ganglion
• 2-3 mm in size
• Topographically - mandibular nerve,
Functionally - glossopharyngeal nerve

23. Situation

24. Connections- Parasympathetic

25. Connections- Sympathetic

26. Connections-Motor