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TEMPORAL REGION

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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TEMPORAL REGION

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  1. TEMPORAL REGION

  2. Temporal Lines • Superior: For attachment of temporalis fascia. • Inferior: For attachment of temporalis muscle.

  3. Boundaries • Superior and posterior boundary: Inferior temporal line. • Anterior boundary: Frontal process of zygomatic. • Inferior: Zygomatic arch.

  4. Floor • Greater wing of sphenoid. • Squamous temporal. • Frontal. • Parietal.

  5. Contents • Temporalis muscle. • Deep temporal nerve and arteries. • Zygomaticofacial nerve.

  6. 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.

  7. Muscles of Mastication • Lateral pterygoid: Lateral pterygoid plate and sphenoid to front of mandible and TMJ. Protracts mandible; depresses chin (bilateral). Grinding (unilateral).

  8. Muscles of Mastication • Medial pterygoid: Lateral pterygoid plate and maxilla to medial surface of mandible near angle. Elevates, protracts (bilateral). Grinding (unilateral).

  9. Muscles of Mastication • Temporalis: Temporal fossa and fascia to coronoid process. Elevates and retracts mandible.

  10. 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.

  11. 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.

  12. TMJ Ligaments • Sphenomandibular ligament: Sphenoid spine to mandibular lingula. Lies medial to TMJ.

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