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What are the four muscles of mastication?
- Masseter
- Temporalis
- Lateral pterygoid muscle
- Medial pterygoid muscle
Nerve supply to all: V3 (Mandibular branch of trigeminal nerve)
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Masseter muscle
Origin, insertion, nerve supply, and function
- Origin: Lower border of zygomatic arch
- Insertion: Lateral surface of angle of mandible
- Function: Close Mandible
- Nerve Supply: V3 - mandibular branch of trigeminal nerve
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Temporalis
Origin, insertion, nerve supply, and function
- Origin: Temporal lines of parietal bones
- Insertion: Coronoid process of mandible
- Function: Close mandible
- Nerve supply: V3 - mandibular branch of trigenminal nerve
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Lateral pterygoid muscle
Origin, insertion, nerve supply, and function
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