Anatomy of the Head and Neck

  • Course Information
  • Vasculature and Lymphatics
  • Innervation
  • Muscles
    • Muscles of the Neck
      30 min
  • Regions and Spaces of the Head
    • Infratemporal Fossa
      30 min
  • Nasal Cavity & Paranasal Air Sinuses
  • Oral Region
  • Pharynx and Esophagus
  • Layers, Regions and Triangles of the Neck
    • Muscles of the Neck
      30 min
  • Larynx, Trachea, and Thyroid Gland
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Infratemporal Fossa

Infratemporal fossa (the mandible and zygomatic bone were been cut) — Gray’s Anatomy — CC BY-SA 4.0

A highly important, irregularly shaped space in the skull that contains many structures including muscles, blood vessels and nerves.

Borders

  1. Anterior: Posterior surface of the Maxilla
  2. Posterior: Mastoid process and Tympanic plate
  3. Superior: Inferior surface of the greater wing of the Sphenoid bone
  4. Inferior: Near the angle of the Mandible (Lateral pterygoid attachment muscle point)
  5. Medial: Lateral Pterygoid plate
  6. Lateral: Ramus of the Mandible

Please note that different authors may use contrasting borders. We urge you to ask your professor which border you should use.

Contents

  1. Lateral and medial pterygoid muscles, and the inferior part of the temporalis muscle (muscles of mastication)
  2. Pterygoid venous plexus (drains to the facial vein)
  3. Otic ganglion (parasympathetic ganglion)
  4. Maxillary artery
  5. Lingual, inferior alveolar, mandibular, buccal and chorda tympani nerves (branches of the trigeminal and facial nerves)

Mnemonic

Put The Pressure On My LIMBC

  1. Pterygoid muscles (lateral and medial)
  2. Temporalis muscle
  3. Pterygoid venous plexus
  4. Otic ganglion
  5. Maxillary artery
  6. Lingual nerve
  7. Inferior alveolar nerve
  8. Mandibular nerve
  9. Buccal nerve
  10. Chorda tympani

Connections

The infratemporal fossa communicated with the following structures:

  1. Temporal fossa through space within the zygomatic arch
  2. Pterygopalatine fossa through the pterygomaxillary fissure
  3. Alveolar foramen

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