SOFT PALATE

  • Soft palate
    • movable muscular fold
    • suspended from roof of mouth
      • posterior border of hard palate
    • separates nasopharynx from oropharynx
    • surfaces
      • anterior ( oral surface)
        • concave
        • marked by a median raphe
      • posterior
        • convex
        • continuous superiorly with
        • floor or nasal cavity
    • borders
      • superior
        • attached to posterior border of hard palate
        • blending on each side with pharynx
      • inferior
        • free
        • from middle
          • hangs a conical projection
            • uvula
              • each side of base of uvula
                • two curved folds of mucous membrane extend laterally and downward
                  • anterior fold
                    • palatoglossal arch or anterior pillar of fauces
                    • forms the lateral boundary of oropharyngeal isthmus or isthmus of fauces
                  • posterior fold
                    • palatopharyngeal arch or posterior pillar of fauces
                      • contains palatopharyngeus muscle
                    • forms posterior boundary of tonsillar fossa
                    • merges inferiorly with lateral wall of pharynx
    • Structure
      • it is a fold of mucous membrane
      • parts
        • palatine aponeurosis
          • flattened tendon of tensor veli palatini
            • forms fibrous basis of palate
          • near median plane aponeurosis splits to enclose
            • musculus uvulae
          • superior surface
            • Levator veli palatini and palatine aponeurosis lie on this surface
          • inferior or anterior surface
        • numerous glands and some taste buds are present
    • Muscles of soft palate
      • Tensor palati ( tensor veli palatini )
      • Levator palati ( Levator Veli palatini )
      • Musculus Uvulae
      • Palatoglossus
      • Palatopharyngeus
    • Nerve supply
      • All muscles of soft palate except tensor veli palatini
        • pharyngeal plexus
          • derived from cranial part of accessory nerve through vagus
      • tensor veli palatini supplied by
      • General sensory nerves
        • middle and posterior lesser palatine nerves
          • branches of maxillary nerve
            • through pterygopalatine ganglion
          • glossopharyngeal nerve
      • Special sensory or gustatory nerves
        • taste sensations from oral surface
    • PASSAVANT'S RIDGE
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  • en/soft_palate.txt
  • 2023/06/17 10:27
  • brahmantra