Unit 4 - The palates

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jadnebalasca
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184438
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Unit 4 - The palates
Updated:
2012-11-19 13:34:25
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Jad Nebalasca
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A&P of the speech and ear mech
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  1. Alveolar arch
    Behind the top teeth
  2. Hard palate
    made up of palatine process of maxilla and palatine process of palatal bone
  3. Soft palate (velum)
    Palatal aponeurosis
  4. Rugae
    transverse ridges posterior to alveolar arch
  5. Palatal vault
    configuration varies (some high, narrow, wide, flat etc)
  6. Levator veli palatine
    • Origin: petrous portion of the temporal bone and medial wall of Eustachian tube
    • Insertion: palatal aponeurosis
    • Action: elevates and retracts the velum
  7. Tensor veli palatine
    • Origin: medial pterygoid plate of sphenoid and side walls of Eustachian tube
    • Insertion: palatal aponeurosis
    • Action: opens the Eustachian tube and stiffens palate
  8. Musculus uvula
    • Origin: posterior nasal spine of palatal bone
    • Insertion: palatal aponeurosis
    • Action: shortens the palate
  9. Palatoglossus
    • Origin can pull insertion and vice versa
    • Forms the posterior faucial pillar
    • Origin: palatal aponeurosis
    • Insertion: pharyngeal aponeurosis as far down as the area of the thyroid cartilage
    • Action: muscles narrows the pharynx and lower the soft palate

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