Embryology

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the anterior piece of bone in front of the articular fossa

articular eminence
the space in the temporal bone where the condyle sites

articular fossa
a process off of the mandible that articulates with the temporal bone

condyle
completely encloses the TMJ and has 2 layers

joint capsule
what are the 2 layers of the joint capsule?
- fibrous exterior
- synovial membrane
layer of the joint capsule that gives it support

fibrous exterior
inner layer of connective tissue of the joint capsule

synovial membrane
Where does the TMJ get its nutritional supply?

from the nerves and blood vessels in the synovial membrane layer of the joint capsule
a fluid secreted by the synovial membrane that lubricates the TMJ

synovial fluid
fibrous connective tissue that sits between the condyle and the articular fossa

disc of the joint
completely divides the joint into 2 sections called synovial cavities

disc of the joint
The disc of the joint divides the joint into 2 sections called what?

synovial cavities
true or false. with age, the disc of the joint can thin and make jaw movements uncomfortable

true
movement of the joint requires what 2 movements to fully open the mouth?
- gliding
- rotation
of the 2 movements of the TMJ, which one occurs first?

rotation
what are 2 disorders of the TMJ?
- subluxation
- temporomandibular disorder
the head of the condyle moves too far anteriorly and gets stuck past the articular eminence

subluxation
How do you treat someone with subluxation?

relax the muscle (with time or medication) and then carefully move the mandible down and back
What are 4 possible symptoms of temporomandibular disorder (TMD)?
- chronic joint tenderness
- painful muscle spasms
- limited or deviated opening
- MAYBE headaches
What are 4 possile treatments for temporomandibular joint disorder (TMD)?
- relaxation therapy
- muscular exercises
- nightgaurds
- orthodontics to correct occlusal problems

Author:	sthomp88
ID:	50785
Card Set:	Embryology
Updated:	2010-12-06 07:04:15
Tags:	Chapter nineteen
Folders:
Description:	temporomandibular joint 1
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