Muscles of mastication
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Temporalis | O:Temporal Fossa.
I: Coronoid process & ramus of mandible.
A: Elevation and retraction of the mandible.
N: Trigeminal nerve.
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| Masseter | O: Superior- zygomatic process, inferior border of zygomatic arch. Deep- inferior border of zygomatic arch.
I: Superficial- angle and ramus of mandible. Deep- superior ramus & coronoid process of mandible.
A:Elevation, pro+ret of mandible(Clench teeth).
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| Lateral Pterygoid | O: Superior- greater wing of sphenoid. Inferior- sphenoid bone.
I: S- capsule/ articular disc of TMJ
A: Protraction and depression of mandible (open jaw)
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| Medial Pterygoid | O: Sphenoid bone, Palatine bone and pterygoid fossa.
I: Inner surface of mandibular ramus and angle of mandible.
A: Elevation of mandible (clench teeth). Lateral deviation of mandible. Protraction of mandible.
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Created by:
kietmany
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