Topik 5 Flashcards
What is temporomandibular joint
Articulates between mandible and temporal
Occipital bone
Protect cerebellum and occipital lobes
Provides attachment for several muscle and ligaments
Parietal bone
Bilateral bones
Two surface, 4 boarders and 4 angles
Facial muscles
Located in the subcutaneous tissue
Innervated by facial expressions
3 groups; orbital, nasal, oral
Orbital group
Corrugator supercilii
Orbicularis oculi
Control movement of eyelids
Nasal group
Nasalis
Procerus
Depressor septi nasi
Oral group
Buccinator
Obcularis oris
Tmj bony surfaces
Separated by articular disk
2 synovial join- lines synovial membrane
Covered by fibrocartilage
Tmj ligaments
Lateral- prevent dislocated posterior joint
Sphenomandibular- originates from sphenoid, attached to the mandible
Stylomandibular- support weight of jaw
Movement of tmj
Elevation
Depression
Protraction
Retraction