dental anatomy

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dental anatomy
2010-11-30 21:45:54

oral mucosa
Show Answers:

  1. what is the most common form of keratinization for lining mucosa?
  2. lining mucosa is _____ to help with speech mastication and swallowing
  3. where is lining mucosa found? (5)
    • buccal and labial mucosa
    • alveolar mucosa
    • floor of the mouth
    • ventral surface of tongue
    • soft palate
  4. what are 4 clinical considerations for lining mucosa?
    • sutures-soft tissue
    • fordyce sposts/granules
    • easier to inject
    • infections spread quickly
  5. why do infections spread quickly with lining mucosa?
  6. what are fordyce's spots/grandules
    misplaced sebaceous glands (appear as yellow spots)
  7. what appear as yellow spots and are misplaced sebaceous glands?
    fordyce's spots/granules
  8. where is masticatory mucosa located (3)
    • attached gingiva
    • hard palate
    • dorsal surface of tongue
  9. masticatory mucosa can be _______ and/or ______
    • orthokeratinized
    • parakeratinized
  10. what color does orthokeratinized appear as?
  11. what color does parakeratinized appear as?
  12. t/f orthokeratinized epithelium contains nuclei
    FALSE! no nuclei
  13. t/f orthokeratinized is the most common epithelium in the oral cavity
    FALSE! least common
  14. what five things does orthokeratinized epithelium protect against?
    • physical, chemical and microbial attack
    • dehydration and heat loss
  15. t/f parakeratinized has no nuclei
    FALSE! they have nuclei
  16. what is parakeratinized epithelium associated with?
    higher level of attached gingiva
  17. parakeratinized epithelium has special protection against what?
    • bacterial invasion
    • mechanical irritation
    • dryness
  18. what are three clinical considerations for masticatory mucosa?
    • sutures rarely needed
    • injections more difficult (don't have to go as deep)
    • longer healing time (24 days)
  19. what causes tissue to become hyperkeratinized?
  20. why is the linea alba formed?
    masticatory habits
  21. t/f nonkeratinized tissue can transform into keratinized in response to trauma
    true dat mhm
  22. hyperkeratinization may occur in response to _____ trauma (give examples)
    chemical-heat from smoking or hot liquids
  23. hyperkeratiziation from chemical trauma is reversible how?
    if the source of trauma is removed
  24. where is specialized mucosa found?
    dorsal and lateral surfaces of the tongue
  25. what is specialized mucosa?
  26. t/f labial and buccal mucosa is extremely thin
    false it be thick!
  27. is the alveolar mucosa thick or thin?
    extremely thin
  28. the floor of mouth/ventral surface of tongue function as ____ ____
    one unit
  29. the ____ portion is firmer than the _____ of the hard palate
    • medial
    • lateral
  30. what is the difference between a free gingival graft and a subepithelial connective tissue graft
    • free gingival graft the tissue comes from the hard palate (keratinized)
    • subepithelial connective tissue graft they use the lamina propria (more vascular no keratin)
  31. describe the anterior 2/3 of the tongue
    tightly packed straited muscle bundles; little adipose tissue
  32. what portion of the tongue is tightly packed striated muscle bundles with little adipose tissue
    anterior 2/3
  33. describe the posterior 1/3 of the tongue
    bulkier less mobile and less adipose tissue
  34. what portion of the tongue is bulkier less mobile and has less adipose tissue
    posterior 1/3
  35. what type/types of mucosa is the dorsal surface of the tongue? what part is it on the tongue?
    • masticatory mucosa-covers muscle tissue
    • specialized mucosa -tongue papilla
  36. which of the papilla on the tongue are not taste buds
  37. which papilla on the tongue are associated with taste buds?
    • fungiform
    • foliate
    • circumvallate
  38. the taste buds have a ____ turnover time
  39. what portion of the taste bud transmits taste?
    central portion has taste cells to transmit taste
  40. what is the taste pore
    opening in the taste cell
  41. what are four fundamental taste sensations?
    • sweet
    • sour
    • salt
    • bitter
  42. what is the most common papilla on the tongue
  43. where are the filiform papilla located?
    body of dorsal surface of tongue
  44. what is the size of a filiform papilla
    2-3 mm
  45. what texture does the filiform papilla have?
  46. filiform papilla have increased _____ which gives them a ____ color
    • keratin
    • white
  47. what is the function of a filiform papilla
    guide food back to pharynx
  48. which papilla has the function to guide the food back to the pharynx
  49. where are fungiform papilla located?
    body of dorsum of tongue
  50. what is the shape of the fungiform papilla
    mushroom mushroom-badger badger badger badger badger badger badger badger AH its a SNAKE
  51. what is the size of fungiform papilla?
    1 mm
  52. what is the color of a fungiform papilla
    read (highly vascularized)
  53. what is the function of the fungiform papilla?
    taste YUM FOOOOD!
  54. what papilla are located on the posterior portion of the tongue?
    foliate papilla (lil leafy)
  55. what is the appearance of the foliate papilla?
    4-11 vertical ridges
  56. where are the taste buds located on the foliate papilla?
    lateral portion
  57. how many circumvallate papilla are there?
    7-15 (unless you are in head and neck then the answer changes)
  58. what is the size of the circumvallate papilla?
    3-5 mm
  59. what papilla are located anterior to the sulcus terminalis?
    circumvallate papilla
  60. the circumvallate papilla have a ______ trough/trench around them
    circular (von ebner's salivary gland)
  61. what is the circular trough/trench around the circumvallate papilla?
    von ebner's salivary gland
  62. what is the purpose of the von ebner's salivary glands?
    produces saliva into trench around papilla to keep them clean so you can taste
  63. where are the von ebner's salivary glands located
    around the circumvallate papilla
  64. what is the cause of geographic tongue
    changes in filiform papilla (go from parakeratinized to ortho)
  65. what are the symptoms of geographic tongue?
    sore or burning tongue (can be hereditary)
  66. what is the shape of geographic tongue?
    changes with time
  67. t/f geographic tongue must be treated surgically.
    False-no treatment
  68. what is the cause for black hairy tongue?
    normal shedding of epithelium of filiform papilla does not occur (EW GAG!)
  69. what is the effect of fungal overgrowth due to high does of antibiotics or radioation?
    black hairy tongue
  70. what is the treatment for black hairy tongue
  71. t/f older peoples turnover time won't be as quick as younger