INFRATEMPORAL FOSSA

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Infratemporal fossa
- Irregular space below zygomatic arch
- Boundaries
  - Anterior
    - Posterior surface of body of maxilla
  - Roof
    - Infratemporal surface of greater wing of sphenoid
  - Medial
    - Lateral pterygoid plate and pyramidal process of palatine bone
  - Lateral
    - Ramus of mandible
- Contents
  - Lateral pterygoid muscle
  - Medial pterygoid muscle
  - Mandibular nerve with its branches
  - Maxillary nerve with its branches
  - Chorda tympani nerve
  - 1st and 2nd parts of maxillary artery with their branches
  - Posterior superior alveolar artery , branch of 3rd part of maxillary artery
  - Accompanying veins
- Relations of lateral pterygoid
  - Superficial
    - Masseter
    - Ramus of mandible
    - Tendon of temporalis
    - Maxillary artery
  - Deep
    - Mandibular nerve
    - Middle meningeal artery
    - Sphenomandibular ligament
    - Deep head of medial pterygoid
  - Structures emerging from upper border
    - Deep temporal nerve
    - Masseteric nerve
  - Structures emerging from lower border
    - Lingual nerve
    - Inferior alveolar nerve
    - Middle meningeal artery and accesory meningeal artery
  - Structures passing through gap between two heads
    - Maxillary artery enters gap
    - Buccal branch of mandibular nerve
- Relations of medial pterygoid
  - Superficial
    - Upper part separated from lateral pterygoid by
    - Lateral pterygoid plate
    - Lingual nerve
    - Inferior alveolar nerve
  - Deep relations
    - Tensor veli palatini
    - Superior constrictor of pharynx
    - Styloglossus
    - Stylopharyngeus

INFRATEMPORAL FOSSA

BOUNDARIES

CONTENTS

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