revision

• where does the temporalis muscle insert?

  coronoid process of the mandible
• what is the function of the temporalis?

  retraction of the mandible
• where does the medial pterygoid muscle insert?

  angle of the mandible
• what is the function of the lateral pterygoid muscle?

  depresses and protrudes the mandible
• what does the mylohyoid muscle do during mastication?


  stabilizes the hyoid bone
• what type of joint is the TMJ?

  synovial
• what is the primary action of the TMJ?

  rotation and sliding
• what separates the TMJ into upper and lower compartments?

  articular disc
• how does the mandible move during mastication?

  all directions
• what nerve provides sensory innervation to the TMJ?

  trigeminal nerve
• what is the function of synovial fluid?

  provides nutrients

  lubricates

  absorbs shock
• what is the upper compartment of the TMJ for?

  gliding or translation
• what does depression of the TMJ involve?

  lowering the jaw
• what compartment of the TMJ is most active when opening the mouth wide?

  upper compartment
• what is the function of the lateral pterygoid?

  protrusion of the mandible
• what separates the two compartments of the TMJ?

  articular disc
• what occurs in the lower compartment of the TMJ?

  hinge-like rotation
• what stabilizes the mandible in mastication?

  all three ligaments
• what compartments have synovial fluid?

  both
• what bone form the posterior boundary of the TMJ?

  temporal bone
• what nerve is responsible for the motor function of TMJ?

  hypoglossal nerve
• what artery supplies blood to the TMJ?

  superficial temporal artery
• what muscle elevates and assists lateral movements of the TMJ?

  medial pterygoid
• describe the movement of the condyle and disc during maximal jaw opening:

  anteriorly
• what is the function of the temporalis?

  retracts the mandible
• what is the mandibular nerve responsible for in the TMJ?

  pain sensation
• what stabilizes the TMJ when chewing?

  articular disc
• what is the origin of the buccinators muscle?

  maxilla and mandible near the molars
• what nerve innervates the buccinators muscles?

  facial nerve
• what forms the floor of the mouth?

  mylohyoid
• what is the insertion of the mylohyoid bone?


  hyoid bone
• what nerve innervates the mylohyoid bone?

  Inferior alveolar nerve

  mandibular nerve
• what is responsible for tongue protrusion?

  genioglossus
• what is the origin of the genioglossus muscle?

  superior mental spine of the mandible
• what nerve supplies the genioglossus muscle?

  hypoglossal nerve
• what is the function of the styloglossus?

  elevates the tongue during swallowing
• where does the styloglossus muscle insert?

  lateral sides of the tongue
• what nerve supplies the styloglossus muscle?

  hypoglossal nerve
• what does the hyoglossus muscle do?

  depresses and retracts the tongue
• where is the geniohyoid muscle located?

  above the mylohyoid