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TEMPORAL REGION. Temporal Lines. Superior: For attachment of temporalis fascia. Inferior: For attachment of temporalis muscle. Boundaries. Superior and posterior boundary: Inferior temporal line. Anterior boundary: Frontal process of zygomatic. Inferior: Zygomatic arch.

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Presentation Transcript
temporal lines
Temporal Lines
  • Superior:

For attachment of temporalis fascia.

  • Inferior:

For attachment of temporalis muscle.

boundaries
Boundaries
  • Superior and posterior boundary:

Inferior temporal line.

  • Anterior boundary:

Frontal process of zygomatic.

  • Inferior:

Zygomatic arch.

floor
Floor
  • Greater wing of sphenoid.
  • Squamous temporal.
  • Frontal.
  • Parietal.
contents
Contents
  • Temporalis muscle.
  • Deep temporal nerve and arteries.
  • Zygomaticofacial nerve.
muscles of mastication
Muscles of Mastication
  • General characteristics:

All innervated by mandibular branch of CN V.

  • Masseter:

Zygomatic bone to lateral surface of ramus and coronoid process.

Elevates and protracts mandible.

muscles of mastication1
Muscles of Mastication
  • Lateral pterygoid:

Lateral pterygoid plate and sphenoid to front of mandible and TMJ.

Protracts mandible; depresses chin (bilateral).

Grinding (unilateral).

muscles of mastication2
Muscles of Mastication
  • Medial pterygoid:

Lateral pterygoid plate and maxilla to medial surface of mandible near angle.

Elevates, protracts (bilateral).

Grinding (unilateral).

muscles of mastication3
Muscles of Mastication
  • Temporalis:

Temporal fossa and fascia to coronoid process.

Elevates and retracts mandible.

temporomandibular joint
Temporomandibular Joint
  • Synovial joint:

Between head of mandible (condyloid process) and mandibular fossa of temporal bone.

Intervening cartilage:

Divides joint into superior and inferior compartments.

Allows mandible to protract and retract as well as elevate and depress.

tmj ligaments
TMJ Ligaments
  • Temporomandibular ligament:

Base of zygomatic process to mandibular neck.

  • Stylomandibular ligament:

Styloid process to angle of mandible.

Runs between parotid and submandibular glands.

tmj ligaments1
TMJ Ligaments
  • Sphenomandibular ligament:

Sphenoid spine to mandibular lingula.

Lies medial to TMJ.

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