KINES 300 Lecture Notes - Lecture 17: Condyloid Process, Articular Disk, Masseter Muscle

• School: American River College
• Department: Kinesiology
• Course: KINES 300
• Professor: Kiefer

Document Summary

Masseter- elevation, protrusion and il excursion of mandible. Temporalis- elevation, retrusion and il excursion of mandible. Superior head: elevation, protrusion and cl excursion of mandible. Inferior head: depression, protrusion and cl excursion of mandible. Medial pterygoid- elevation, protrusion and cl excursion of mandible. Convex mandibular condyle in concave mandibular fossa. Articular disc to increase congruency and stability. Excursion: il side becomes atlas, cl rotates anteriorly and towards il side. Retrusion: posterior translation of mandibular condyle on mandibular fossa. Protrusion: anterior translation of mandibular condyle on mandibular fossa. Extension: inferior facet slides down and back. Lateral flexion: il inferior facet slides down and back, cl inferior facet slides forward and up. Rotation: both inferior facets rotate toward opposite direction of rotation. Flexion: inferior facet slides forward and up. Extension: inferior facet slides back and down. Rotation: inferior facet slides on superior facet toward opposite direction of rotation.