18b TMJ
18b TMJ
18b TMJ
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Lateral Pterygoid Muscle<br />
• Origin:<br />
– Superior head – infratemporal<br />
surface of greater wing of<br />
sphenoid bone<br />
– Inferior head – lateral surface<br />
of lateral pterygoid plate<br />
• Insertion:<br />
– Anterior portion of condylar<br />
neck and articular disc<br />
• Function:<br />
– Protrudes and laterotrudes the<br />
mandible, pulls articular disc<br />
forward
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