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25 Cards in this Set
- Front
- Back
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synarthrosis
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immovable joint (suture)
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gomphosis
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teeth in socket
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amphiarthrosis
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slightly moveable (vetebral joint)
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diarthrosis
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freely moveable (most joints including TMJ)
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arhroidial
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gliding (part of TMJ)
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ginglymus
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hinge motion in one plane (elbow)
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trochoid
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pivot, rotation around axis
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condyloid
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fingers
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enarhroidal
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ball and socket (shoulder)
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sellar
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saddle joint (thumb)
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TMJ is a
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ginglyarthroidal (hing and gliding joint)
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articular disc
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dense fibrous tissue that divides interior of joint into superior and inferior compartments
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superior compartment
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gliding
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inferior compartment
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hinge
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periphery of disc
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attaches to capsule and is thicker than central area
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ligaments
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temporomandibular
sphenomandibular stylomandibular |
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temporomandibular ligaments
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from zygomatic process of temporal to neck of mandibular condyle
prevents posterior displacement and excess lateral displacement |
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sphenomandibular ligament
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from spine of sphenoid to lingula
becomes taut in excessive opening |
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stylomandibular
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from styloid process to angle of mandible
becomes taut in excessive protrusion |
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blood supply of TMJ
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superficial temporal
maxillary-deep auricular a |
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protrusion
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condyles move forward and discs glide down eminence
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retrusion
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opposite of protrusion
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depression
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condyles rotate anteriorly an discs glide down eminence
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elevation
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discs glide up and condyles rotate posteriorly
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lateral deviation
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when moving to right, right rotates anteriorly and left glides down
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