Muscles of Mastication Quiz

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Questions and Answers

What is the origin of the Temporalis muscle?

  • Zygomatic arch
  • Pterygoid process
  • Temporal bone (correct)
  • Mandible

Which muscle elevates and retracts the mandible?

  • Masseter
  • Medial pterygoid
  • Temporalis (correct)
  • Lateral pterygoid

What is the action of the Medial pterygoid muscle?

  • Elevates and protracts the mandible
  • Elevates and retracts the mandible
  • Elevates the mandible (correct)
  • Depresses and protracts the mandible

Which muscle originates from the Pterygoid process?

<p>Medial pterygoid (B)</p> Signup and view all the answers

What is the action of the Lateral pterygoid muscle?

<p>Depresses and protracts the mandible (A)</p> Signup and view all the answers

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Study Notes

Muscles of Mastication

Temporalis Muscle

  • Originates from the temporal bone
  • Inserts into the mandible
  • Action: Elevates and retracts the mandible

Masseter Muscle

  • Originates from the zygomatic arch
  • Inserts into the mandible
  • Action: Elevates the mandible

Medial Pterygoid Muscle

  • Originates from the pterygoid process
  • Inserts into the mandible
  • Action: Elevates and protracts the mandible

Lateral Pterygoid Muscle

  • Originates from the pterygoid process
  • Inserts into the mandible
  • Action: Depresses and protracts the mandible

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