Exam 3: Oral Cavity

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brau2308
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161171
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Exam 3: Oral Cavity
Updated:
2012-07-08 21:33:35
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anatomy oral cavity
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review of 7/5 lecture on oral cavity for exam 3
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  1. Where is the oral cavity proper?
    • space inside teeth and gums
    • anterior to palatoglossal folds 
  2. Where is the oral vestibule?
    space between lips, cheeks and gums and teeth
  3. What is the palate?
    forms roof of oral cavity and floor of nasal cavity
  4. How many parts is there to the palate?
    2
  5. What are the 2 parts of the palate?
    • hard palate
    • soft palate 
  6. What part of the palate is the bony palate?
    the bony components
  7. What are the bony components of the hard palate?
    palatine processes of maxilla and horizontal plates of palatine bones
  8. When do the horizontal plates of the palatine bones normally fuse together?
    before birth
  9. What happens if fusion of the horizontal plates of the palatne bones is incomplete?
    cleft palate is the result
  10. How many nerves supply the palate?
    2 sets of nerves
  11. How many blood vessels supply the palate?
    2 sets of blood vessels
  12. What supplies the palate?
    • greater palatine artery and nerve
    • lesser palatine artery and nerve 
  13. The greater palatine artery is a branch of what?
    maxillary artery
  14. The greater palatine nerve is a branch of what?
    maxillary division of trigeminal n
  15. Is the greater palatine nerve motor or sensory?
    sensory
  16. The lesser palatine artery is a branch of what?
    maxillary artery
  17. The lesser palatine nerve is a branch of what?
    maxillary division of trigeminal nerve
  18. Where is the soft palate attached?
    posterior border of hard palate
  19. What are the skeletal muscles involved in the soft palate?
    • tensor veli palaini
    • levator veli palatini
    • palatoglossus
    • palatopharyngeus
    • musculus uvulae
  20. What is unique about the insertion of the tensor veli palatini?
    takes 90 degree turn around pterygoid hamulus
  21. What is contained in the mucosa?
    many mucous glands
  22. What innervates the muscous glands?
    parasympathetic fibers associated with CN VII
  23. Name the salviary glands:
    • parotid gland
    • submandibular gland
    • sublingua gland
  24. Which salivary gland is the largest?
    parotid gland
  25. Where does the parotid gland empty into?
    oral vestibule adjacent the second maxillary molar (via parotid duct)
  26. What innervates the parotid gland?
    parasympathetic motor fibers supplied by CN IX
  27. What are the parts of the submandibular gland?
    • superficial
    • deep
  28. Which triangle is the superficial part of the submandibular glnd visible in?
    submandibular triangle
  29. Where is the deep part of the submandibular gland?
    in the floor of the oral cavity
  30. Where does the submandibular gland empty?
    sublingual caruncle in floor of mouth (via submandibular duct)
  31. What innervates the submandibular gland?
    parasympathetic motor fibers by CN VII (chorda tympani branch)
  32. Where does the sublingual gland empty?
    via numerous ducts on surface of sublingual fold in floor of mouth
  33. What innervates the sublingual gland?
    parasympathetic motor fibers by CN VII (chorda tympani branch)
  34. Sympathetic motor fibes contained in the carotid plexus supply the arteries which provides what with blood?
    salivary glands
  35. What does sympathetic stimulation of the carotid plexus supplying salviary glands do?
    vasoconstriction of blood vessels supply glands, reduces blood flow, decreased salvia production
  36. What muscle makes the floor of the oral cavity?
    mylohyoid
  37. What happens if the genioglossus muscle doesn't work?
    you die
  38. What does the genioglossus muscle do?
    protrudes tongue
  39. What is the sulcus terminalis?
    • where fussion of two blocks of embryonic tongue occurs
    • line distinguishing anterior 2/3's from posterior 1/3
    • important landmark  
  40. The tongue develops in the embryo from:
    two blocks of tissue which later fuse together
  41. What are the masses of tissue that make the tongue associated with?
    different cranial nerves
  42. What type of muscle is the tongue mostly made up of?
    skeletal
  43. Are muscles of the tongue intrinsic or extrinsic muscles?
    both
  44. What innervates the skeletal muscle of the tongue?
    CN XII (hypoglossal nerve)
  45. Where is the anterior 2/3's of the tongue contained?
    in the oral cavity
  46. Where is the posterior 1/3 of the tongue?
    oropharynx
  47. Where is the orophaynx?
    posterior to palatoglossal folds
  48. What is the function of the intrinsic muscles of the tongue?
    changes shape of tongue (chewing, swallowing, whistling)
  49. What innervates the intrinsic muscles of the tongue?
    hypoglossal nerve
  50. What provides innervation of the general sensory of the anterior 2/3's of the tongue?
    CN V3
  51. What innervates the taste buds of the anterior 2/3's of the tongue?
    CN VII (chorda tympani branch)
  52. What provides innervation of the general sensory of the posterior 1/3 of the tongue?
    CN IX
  53. What innervates the taste buds of the posterior 1/3 of the tongue?
    CN IX
  54. What is the fernulum?
    connects ventral surface of tongue to floor of mouth
  55. What is found on either side of the frenulum?
    • sublingual caruncles
    • sublingual folds 
  56. Which salivary gland are the sublingual caruncles associated with?
    submandibular ducts
  57. Which salivary gland are the sublingual folds associated with?
    ducts draining sublingual gland
  58. What does extrinsic muscles of the tongue mean?
    • don't originate in tongue
    • come from outside and go into tongue 
  59. Name the extrinsic muscles of the tongue:
    • genioglossus
    • hyoglossus
    • styloglossus
    • palatoglossus
  60. Where does the genioglossus muscle insert?
    geniotubercle of mandible
  61. What is the function of the genioglossus?
    depresses and protrudes the tongue
  62. What is the function of the hyoglossus?
    depresses and retracts tongue
  63. What is the function of the styloglossus?
    retracts and elevates sides of tongue to create trough for swallowing
  64. What is the function of palatoglossus?
    elevates posterior part of tongue
  65. What innervates the extrinsic muscles of the tongue?
    CN XII
  66. Which extrinsic muscle of the tongue is not innervated by CN XII? Which nerve?
    • palatoglossus
    • CN X
  67. What is the dental formula?
    • 2-1-2-3
    • describees number of incisors, canine, premolar and molar teeth on each side of upper and lower jaw 
  68. How many teeth are in an adult?
    32
  69. Maxillar teeth receive innervation from what?
    sensory nerve fibers by CN V2 (superior alveolar nn; typically 3 in number on each side)
  70. Mandibular teeth receive innervation from what?
    sensory nerve fibers by CN V3 (inferior alveolar n)
  71. What arter supplies the lips and cheeks?
    facial artery
  72. What artey supplies the tongue?
    lingual a.
  73. What artery supplies the palate and upper teeth?
    branches of maxillary artery
  74. What artery supplies the lower teeth?
    inferior alveolar a.
  75. What nerve supplies the lower teeth?
    inferior alveolar n
  76. All arteries supplying the oral cavity ar branches of which artery?
    external carotid a.

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