1. The temporomandibular joint (TMJ) is a joint
    on each side of the head that allows for movement of the mandible for speech and mastication
  2. A joint is
    ˜a site of junction or union between two or more bones.
  3. The TMJ is innervated by the
    mandibular nerve (or division) of the fifth cranial or trigeminal nerve
  4. The blood supply to the joint is from branches of the
    external carotid artery
  5. The TMJ has two sets of
  6. ________ articulates with the mandible at the TMJ by way of the _______
    • The temporal bone
    • disc of the joint
  7. What are the bones involved in the temporal bone
    • ˜The articular eminence˜
    • The articular  fossa
    • ˜the postglenoid process
  8. ˜The articulating surface of the condyle is strongly _______ and only slightly _______.
    • convex in the anteroposterior direction
    • convex mediolaterally
  9. A ________ completely encloses the TMJ
    fibrous joint capsule
  10. The fibrous disc of the joint or ______ is located between the ______ bone and _________ on each side
    • meniscus
    • temporal
    • mandibular condyle
  11. The disc completely divides the TMJ into two compartments or ________: ______ and _______
    • synovial cavities
    • upper and lower
  12. The membranes lining the inside of the joint capsule secrete ______ that helps ________
    • synovial fluid
    • lubricate the joint and fills the synovial cavities
  13. The mandible is joined to the cranium by _________ of the TMJ
  14. A ligament is a
    band of fibrous tissue that connects bones
  15. Three paired ligaments are associated with the TMJ
    temporomandibular, stylomandibular, and sphenomandibular
  16. ________  is considered the major ligament for the TMJ and located on the _______
    • The temporomandibular ligament
    • lateral side of each joint
  17. The TMJ ligament prevents the
    excessive retraction or moving backward of the mandible
  18. ˜The stylomandibular ligament is a ligament that becomes
    taut when the mandible is protruded.
  19. ˜The sphenomandibular ligament is not strictly considered part of the TMJ but is located .
    on the medial side of the mandible, some distance from the joint
  20. the sphenomandibular ligament becomes ________ when the mandible is protruded.
    accentuated and taut
  21. Which ligament is a landmark for the administration of inferior alveolar block
    The sphenomandibular ligament
  22. What are the two basic types of movement performed by the joint and its associated muscles
    gliding and rotational
  23. What is rotation
    ˜first 20 mm. millimeters (approx.) of opening – the condyles remain up in mandibular fossa (condyle rotates on the disc)
  24. What is gliding or ________
    • translation
    • opening wide (usually around 35 to 40mm) w/ condyles sliding down slope of articular eminence w/ disc interposed between the condyle and the articular eminence
  25. Retrodiscal pad is part
    ligament, part nerve and blood supply, and part elastic fibers to help return structures to normal in closing
  26. The gliding movement of the TMJ occurs mainly between the ________ in the upper ______
    • disc and the articular eminence of the temporal bone
    • synovial cavity
  27. The gliding movement allows the lower jaw to
    move forward or backward
  28. Bringing the lower jaw forward involves ________ of the mandible which involves the bilateral contraction of both of the _________
    • protrusion
    • lateral pterygoid muscles
  29. Bringing the lower jaw backward involves _______ of the mandible which involves ˜the contraction of the __________
    • retraction
    • posterior parts of both temporalis muscles
  30. ˜The rotational movement of the TMJ occurs mainly between the disc and the condyle in the _______ and the movements accomplished are ________.
    • lower synovial cavity
    • depression or elevation of the mandible
  31. lateral movement of the jaw is _______ which involves contraction of
    • ˜shifting from side to side
    • contralateral lateral pterygoid
  32. What muscles are involved in depressing the mandible
  33. What muscles are involved in the elevation of the mandible
  34. When the TMJ is at rest, there is an ___________ ( a space between the upper and lower teeth). This is called the _______  position
    • interocclusal clearance or freeway space
    • physiologic rest
  35. ˜A patient may have pathology associated with one or both of the TMJs or a
    temporomandibular disorder (TMD).
  36. __% of patients with pain in their joint really have ______
    • 95%
    • tenderness in the muscles invloved
  37. Popping or clicking is a result of the disc getting _______ and _______
    pulled anteriorly during function and the condyle clicking as it goes onto it and off of it
  38. An acute episode of TMD can occur when a patient opens the mouth too wide causes
    subluxation or dislocation of both joints
  39. Treatment of subluxation consists of
    relaxing these muscles and having the clinician carefully shift the mandible downward and back gently with the finger and thumbs of both hands, equally on both sides
  40. trismus
    or the inability to normally open the mouth
  41. What are the steps to treating trismus
    • ˜Possibly use anti-inflammatory medicines – aspirin, ibuprofen
    • Use cold at first to reduce swelling in the muscles. After a day or so
    • Place warm compresses
    • Begin to massage the jaw muscles
    • Exercise the jaw muscles
  42. The main functions of the tongue are
    pushing food into the oropharynx during swallowing and forming words during speaking, although it is also implicated in mastication, taste, and oral cleansing
  43. The posterior third of the tongue is the
    base of the tongue or pharyngeal part
  44. The base of the tongue attaches to the ________ and does not lie ________
    • floor of the mouth
    • within the oral cavity
  45. Three parts of the pharynx
    nasopharynx, oropharynx, and laryngopharynx
  46. The laryngopharynx is located more _______, close to the _______
    • inferior
    • laryngeal opening
  47. The nasopharynx is ________ and located _______
    • continuous with the nasal cavity
    • superior to the level of the soft palate
  48. The oropharynx is located between the ______ and the ________
    the soft palate and the opening of the larynx
  49. The epiglottis is a _______ and located behind ______ and in front of ________
    • flap of cartilage
    • the base of the tongue
    • the oropharynx
  50. The vallecula is the ________and forms the _______
    • the space between the base of the tongue and the epiglottis
    • the inferior border of the oropharynx
  51. The opening from the oral region into the oropharynx is the
Card Set