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Questions and Answers
What is the origin of the Temporalis muscle?
What is the origin of the Temporalis muscle?
- Zygomatic arch
- Pterygoid process
- Temporal bone (correct)
- Mandible
Which muscle elevates and retracts the mandible?
Which muscle elevates and retracts the mandible?
- Masseter
- Medial pterygoid
- Temporalis (correct)
- Lateral pterygoid
What is the action of the Medial pterygoid muscle?
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?
Which muscle originates from the Pterygoid process?
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What is the action of the Lateral pterygoid muscle?
What is the action of the Lateral pterygoid muscle?
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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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