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15 Cards in this Set
- Front
- Back
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Temporalis origin |
* originates from the temporal fossa (on head).Also originates from the facia (dense connective tissue) |
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Temporalis Insertion |
internal over the coronoid process but is also on exterior side, too (makes coronoid process pointy). also inserts into the anterior margin of mandibular ramus |
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Temporalis: Primary and secondary actions |
Primary: elevation Secondary: retrude, side to side grinding |
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Masseter origin |
zygomatic arch |
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masseter insertion |
external ramus |
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masseter primary and secondary actions |
primary: elevation secondary: protrude, retrude |
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lateral pterygoid origin |
originates from lateral side of lateral pterygoid plate (sphenoid bone) |
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lateral pterygoid insertion |
inserts internal to the pterygoid fovea the neck of the mandible, also articular disc of the TMJ |
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lateral pterygoid primary and secondary actions |
primary: protrusion secondary: grinding, depression |
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Medial pterygoid origin |
originates from medial side of the lateral pterygoid plate (sphenoid bone) and from maxillary tuberosity (near upper wisdom tooth) |
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Medial pterygoid insertion |
-never external, inserts into the medial side. -internally inserts on medial ramus mandible |
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Medial pterygoid actions |
elevation, protrusion, grinding |
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which muscles grind? |
all except the masseter (temporalis, lateral and medial pterygoid muscle) |
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which muscles protrude? |
Masseter, lateral pterygoid, medial pterygoid |
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which muscles elevate |
Temporalis, masseter, medial pterygoid muscle |
