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Gross 2 Exam 1 > Oral Cavity > Flashcards

Oral Cavity Flashcards

1
Q

What makes up the posterior boundary of the oral cavity?

A

oropharyngeal isthmus, demarcated by the palatoglossal arch

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2
Q

What are the two parts of the oral cavity?

A

oral vestibule

oral cavity proper

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3
Q

Where does the oral vestibule lie and what two things does it contain?

A

between the lips and gums, or cheek and gums

contains the labial glands and parotid duct

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4
Q

Where does the oral cavity proper lie?

A

internal to the tooth rows

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5
Q

What is the philtrum of the lip?

A

median groove that externally extends from the nose to the vermilion border of the upper lip

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6
Q

What two things does the lip contain?

A

orbicularis oris muscle and labial glands

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7
Q

What two things does the cheeks contain?

A

buccinator muscle and buccal glands

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8
Q

What does the hard palate form?

A

anterior two thirds of the palate

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9
Q

What does the soft palate form?

A

posterior one third of the palate

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10
Q

What are the 3 foramen in the hard palate and what do they transmit?

A

incisive foramen - transmits naso-palatine nerves

greater and lesser palatine foramen - transmits nerves and vessels

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11
Q

What is the hard palate covered by?

A

mucoperiosteum

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12
Q

What is the function of the transverse palatine folds?

A

aid in gripping food against the tongue during mastication

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13
Q

What is the function of the soft palate during swallowing?

A

elevates to close the opening between the nasopharynx above and the oropharynx below

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14
Q

What are the two arches of the soft palate and what do they contain?

A

palatoglossal arch and they contain palatoglossal fold and muscle
palatopharyngeus arch and they contain palatopharyngeus fold and muscle

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15
Q

What is the uvula?

A

median projection of the soft palate

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16
Q

What does the tonsillar fossa contain and where is it located?

A

located between palatoglossal and palatopharyngeal arches and contains the palatine tonsils (most frequently removed)

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17
Q

What is the tonsil that is most frequently removed?

A

palatine tonsil

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18
Q

What is the function of the musculus uvulae?

A

elevates the uvula

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19
Q

What is the function of the levator veli palatini?

A

elevates the soft palate

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20
Q

What is the function of the tensor veli palatini?

A

tenses soft palate, opens pharyngotympanic tube

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21
Q

Which of the following muscle is innervated by the mandibular divison of the trigeminal nerve?
A. tensor veli palatini
B. levator veli palatini
C. musculus uvulae

A

A. Tensor veli palatini

other two are innervated by the vagus nerve

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22
Q

What two muscles make up the floor of the oral cavity?

A

mylohyoid and geniohyoid muscles

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23
Q

What is the innervation of the hard palate?

A

greater palatine and nasopalatine nerves

24
Q

What are the innervations of the soft palate?

A

lesser palatine nerve

25
Q

What is the blood supply of the hard palate?

A

greater palatine artery (from maxillary)

26
Q

What is the blood supply of the soft palate?

A

lesser palatine and facial arteries

27
Q

What happens to the uvula when you have nerve damage to the left vagus?

A

the uvula deviates to the right

28
Q

What are the 5 structures that the tongue attaches to by muscles?

A 
hyoid bone
mandible
styloid process
palate
pharynx
29
Q

What are the 4 functions of the tongue?

A

taste
mastication
swallowing
speech

30
Q

What is a thyroglossal cyst?

A

occurs when the thyroglossal duct does not obliterate

31
Q

Where is the apex of the tongue?

A

against incisor teeth

32
Q

Where is the margin of the tongue?

A

against teeth and gums

33
Q

Where is the dorsum of the tongue?

A

upper surface of the tongue

34
Q

Where is the inferior surface of the tongue?

A

lower surface of the tongue

35
Q

Where is the root of the tongue?

A

attached base of the tongue

36
Q

What does the sulcus terminalis divide the tongue into?

A

oral part and oropharyngeal part

37
Q

Where do thyroglossal cysts occur?

A

foramen cecum

38
Q

What are the four lingual papillae?

A

filiform papillae
fungiform papillae
vallate papillae
foliate papillae

39
Q 
Which of the following lingual papillae do not contain taste buds?
A. Fungiform papillae
B. Vallate papillae
C. Filiform papillae
D. Foliate papillae
A

C. filiform papillae

40
Q

What is the largest of the papillae?

A

vallate papillae

41
Q

Why is it important for the vallate papillae to sense bitter taste?

A

can trigger GAG reflex (poison)

survival mechanism

42
Q

Where is the lingual tonsils located?

A

on the oropharyngeal surface of the tongue

43
Q

What are the two folds that connect the tongue to the epiglottis?

A

median and lateral glossoepiglottic fold

44
Q

What is the vallecula?

A

space on either side of the median glossoepiglottic fold

45
Q

What is ankyloglossia?

A

where an infants frenulum of the tongue is shorter s-i and longer a-p, tongue is strapped to the floor causing speech to be difficult

46
Q

What nerve innervates the intrinsic muscles of the tongue?

A

hypoglossal nerve

47
Q 
Which of the following is not an extrinsic muscle of the tongue?
A. genioglossus
B. hyoglossus
C. styloglossus
D. sternoglossus
E. palatoglossus
A

D. sternoglossus

48
Q 
Which of the following extrinsic muscles of the tongue is not innervated by the hypoglossal nerve?
A. genioglossus
B. hyoglossus
C. styloglossus
D. palatoglossus
A

D. palatoglossus (vagus nerve)

49
Q

What is the function of the palatoglossus?

A

elevates back of tongue

50
Q

What is the importance of the genioglossus?

A

pulls the tongue forward and prevents the tongue from falling backwards causing you to suffocate

51
Q

What nerves bring general sensation to the anterior two thirds of the tongue?

A

lingual nerve

branch of mandibular division of the trigeminal nerve

52
Q

What nerves bring taste to the anterior two thirds of the tongue?

A

chorda tympani

branch of the facial nerve

53
Q

What is the innervation of the epiglottis?

A

vagus nerve

54
Q

What nerve brings general sensation and taste to the posterior one third of the tongue?

A

glossopharyngeal nerve

55
Q

What is the artery and vein to the tongue?

A

lingual artery and vein

56
Q

What are the 3 lymph nodes associated with the tongue?

A

submental, submandibular, deep cervical nodes

57
Q

Eventually, what node does all the lymph of the tongue drain to?

A

deep cervical node

Gross 2 Exam 1 (9 decks)

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