TMJ

Card Set Information

Author:
alison.cygan
ID:
311579
Filename:
TMJ
Updated:
2015-11-16 17:00:59
Tags:
TMJ
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Description:
Temporomandibular Joint
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  1. What type of cartilage covers the TMJ?
    Fibrocartilage
  2. What type of joint is the TMJ?
    Hinge Type Joint
  3. Muscles of Mastication? (4)
    • Masseter
    • Temporalis
    • Medial Pterygoid
    • Lateral Pterygoid
  4. What nerve innervates the muscles of mastication?
    Trigeminal N. (CN V)
  5. Mandibular Elevation muscles? (3-4)
    • Masseter
    • Medial Pterygoid
    • Temporalis
    • *Inferior Lateral Pterygoid if relaxed
  6. Mandibular Depression muscles? (4)
    • Digastric (ant. head)
    • Lateral Pterygoid (lower head)
    • Suprahyoids
    • Infrahyoids
  7. What is the primary depressor of the mandible?
    GRAVITY!
  8. Mandibular Lateral Deviation muscles? (3)
    • Ipsilateral Temporalis (post. fibers)
    • Contralateral Medial Pterygoid (rotary chewing)
    • Ipsilateral Lateral Pterygoid (rotary chewing)
  9. Mandibular Protrusion muscles? (3)
    • Medial Pterygoid
    • Masseter
    • Lateral Pterygoid (inferior head)
  10. Mandibular Retrusion (retraction) muscles? (3)
    • Temporalis (post/middle fibers)
    • Digastrics
    • Suprahyoids

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