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Anatomy Block 3 > Oral cavity > Flashcards

Oral cavity Flashcards

1
Q

what is included in the oral region?

A
  • oral cavity
  • teeth
  • gingiva
  • tongue
  • palate
  • palatine tonsils
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2
Q

what are the two general parts of the oral cavity?

A
  • oral vestibule

- oral cavity proper

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3
Q

oral vestibule

A

-the space between the lips, cheeks and teeth and gum

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4
Q

oral cavity proper

A

-between the upper and lower dental arches (maxillary and mandibular alveolar processes and the teeth they hold)

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5
Q

what forms the roof of the oral cavity?

A

-the palate

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6
Q

what does the oral cavity communicate with posteriorly?

A

oropharynx

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7
Q

what drains into the the submental lymph?

A

-just bottom lips

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8
Q

what drains into the submandibular lymph?

A

all other parts of the lips besides the lower center lips

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9
Q

what does the palate form?

A

-the roof of the mouth and the floor of the nasal cavity

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10
Q

what are the two parts of the palate?

A
  • hard palate in front

- soft palate behins

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11
Q

what forms the hard palate?

A

the palatine processes of the maxillae and the horizontal plates of the palatine bones

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12
Q

what is special about the mucosa of the hard palate?

A

-it is tightly adherent to the underlying bone

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13
Q

what is the soft palate?

A

-mobile fold attached to the posterior border of the hard palate

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14
Q

uvula

A

-projection on the posterior midline of the soft palate

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15
Q

what is the soft palate continuous with>

A
  • the hard palate anteriorly

- the lateral wall of the pharynx at the sides

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16
Q

what is the soft palate composed of?

A
  • mucous membrane
  • palatine aponeurosis
  • muscles
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17
Q

what is the palatine aponeurosis?

A
  • fibrous sheet attached to the posterior border of the hard palate
  • it is the expanded tendon of the tensor veli palatini muscle
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18
Q

what are the muscles of the soft palate?

A
  • tensor veli palatini
  • levator veli palatini
  • palatoglossus
  • palatopharyngeus
  • musculus uvulae
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19
Q

tensor veli palatini action

A

-tenses the palate and opens pharyngotympanic tube opening during swallowing and yawning

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20
Q

tensor veli palatini innervation

A

-CN V (trigeminal)

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21
Q

Levator veli palatini action

A

-elevates the palate during swallowing and yawning

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22
Q

Levator veli palatini innervation

A

-CN X (vagas)

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23
Q

Palatoglossus action

A

-elevates posterior part of tongue and draws the soft palate onto tongue

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24
Q

palatoglossus innervation

A

CN X (vagas)

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25
Q

Palatopharyngeus action

A

-tenses soft palate and pulls walls of pharynx superiorly, anteriorly, and medially during swallowing

26
Q

palatopharyngeus innervation

A

CN X (vagas)

27
Q

musculus uvulae action and innervation

A
  • shortens uvula and pulls it superiorly

- CN X (vagas)

28
Q

where does the soft palate primarily get its blood supply?

A

descending palatine arteries

29
Q

what is the descending palatine artery branch from?

A

-facial artery

30
Q

what are the nerves that supply the soft palate branches of?

A

V2

-maxillary division of trigeminal

31
Q

what foramen does the nasopalatine nerve ass through?

A

-incisive foramen

32
Q

what does the greater palatine nerve pass through?

A

-greater palatine foramen

33
Q

what does the lesser palatine nerve pass through?

A

-lesser palatine foramen

34
Q

what are the major salivary glands?

A
  • parotid
  • submandibular
  • sublingual
35
Q

the mucous membrane if the tongue is reflected…

A

from the inferior surface of the tongue to the floor of the mouth

36
Q

how is the tongue connected to the floor of the mouth??

A

-by the frenulum, a vertical fold of tissue

37
Q

what is the tongue composed of?

A

-striated muscle covered with mucous membrane

38
Q

what do the muscles of the tongue connect to above?

A

-styloid process and the soft process

39
Q

what do the muscles of the tongue connect to below?

A

-mandible and hyoid bone

40
Q

what divides the tongue into right and left halves?

A

-median fibrous septum

41
Q

what divides the mucous membrane of the upper surface of the tongue into anterior and posterior parts?

A

-sulcus terminalis

42
Q

what is the apex of the sulcus terminalis marked by?*****

A

-the foramen cecum

43
Q

what is the anterior 2/3 of the tongue called?

A

oral part of the tongue

44
Q

what is the posterior 1/3 of the tongue called?

A

pharyngeal part of the tongue

45
Q

what are the two types of muscles in the tongue?

A

intrinsic and extrinsic

46
Q

intrinsic muscles of the tongue

A

-confined to the tongue, not attached to the bone

47
Q

extrinsic muscles of the tongue

A

-attached to bones and soft palate

48
Q

what muscles are considered extrinsic muscles?

A
  • genioglossus
  • hyoglossus
  • styloglossus
  • palatoglossus
49
Q

all tongue muscles are innervated by CN XII, except which one?

A

-palatoglossus

50
Q

palatoglossus innervation

A

-pharyngeal branch of CN X

51
Q

what muscle does protrusion movement of the tongue?**

A

-genioglossus

52
Q

what muscles do retraction of the tongue?

A

-styloglossus and hyoglossus

53
Q

what muscles do depression of the tongue?

A

hyoglossus

54
Q

what muscles do retraction and elevation of the posterior 1/3 part of the tongue?

A

styoglossus and platoglossus muscles

55
Q

what makes the tongue change shapes?

A

-intrinsic muscles

56
Q

what artery supplies the tongue?

A

-lingual artery

57
Q

what vein does the tongue drain into?

A

internal jugular vein

58
Q

where does the tip of the tongue lymph drain?

A

-submental nodes

59
Q

where does the sides of the anterior 2/3 of the tongue lymph drain?

A

-submandibular and deep cervical nodes

60
Q

where does the posterior 1/3 lymph drain?

A

deep cervical nodes

61
Q

innervation of anterior 2/3 of the tongue

A
  • lingual nerve (branch of CN V)-general

- chorda tympani(branch of CN VII)-taste

62
Q

innervation of posterior 1/3 of the tongue

A

-CN IX -general and taste

Anatomy Block 3 (13 decks)

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