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Anatomy > G54: Oral Cavity > Flashcards

G54: Oral Cavity Flashcards

1
Q

Oral Mucosa

A

lining of oral cavity (Buccal, gingivae, epithelium of tongue, and mucoperiostium of hard palate)

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2
Q

Buccal Mucosa

A

lining of the cheeks

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3
Q

Gingivae

A

mucoperiosteum covering alveolar process of maxilla and mandible (mucous membrane and periostium)

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4
Q

Vestibule

A

U-shaped space bounded externally by the lips and cheeks and internally by the teeth and gums

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5
Q

Parotid duct pierces

A

buccopharyngeal fascia and buccinator m

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6
Q

Orifice of parotid duct

A

opposite to 2nd molar

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7
Q

Crown of teeth

A

visible portion of enamel

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8
Q

Neck of teeth

A

portion of enamel surrounded by gums

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9
Q

Root of teeth

A

portion embedded in bone

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10
Q

Pulp cavity of teeth

A

contains CT, nerve, and blood supply, present in root and crown

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11
Q

Deciduous dentition (baby teeth)

A

20 total; 2 incisors, 1 canine, 0 premolars, 2 molars

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12
Q

1st eruption of baby teeth

A

6-8 mo

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13
Q

Last eruption of baby teeth

A

20-24 mo

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14
Q

Shedding of baby teeth

A

6-12 years

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15
Q

Permanent adult teeth

A

32 total; 2 incisors, 1 canine, 2 premolars, 3 molars

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16
Q

Eruption of adult teeth

A

6-18 years

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17
Q

General sensory to upper teeth and upper gingivae?

A

Anterior, Middle (infraorbital) and Posterior Superior Alveolar n.

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18
Q

General sensory to lower teeth and upper gingivae?

A

Inferior alveolar n. and mental n.

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19
Q

General sensory to mucosa of oral cavity?

A

Buccal n. to buccal mucosa, mental n to lower labial mucosa, and anterior middle superior alveolar to upper labial mucosa

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20
Q

Blood supply to Maxillary structure?

A

anterior middle and posterior superior alveolar a.

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21
Q

Blood supply to Mandibular structure?

A

Inferior alveolar a.

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22
Q

Blood supply to cheeks?

A

facial a

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23
Q

Oral Cavity proper borders

A

teeth and gums anteriorly, tongue inferiorly, hard and soft palate superiorly, oropharyngeal isthmus posteriorly (palatoglossal folds)

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24
Q

Bony structure of hard palate

A

palatine processes of the maxillary bone (with incisive foramina) and horizontal plates of palatine bones (with greater and lesser palatine foramina)

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25
Q

General sensory innervation to hard palate?

A

greater palatine n and nasopalatine n.

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26
Q

Blood supply to palate?

A

Greater palatine branch of the descending palatine a. and septal branches of sphenopalatine a

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27
Q

Soft palate

A

consists of membranous aponeurosis, skeletal muscle, and mucus membranes; continuous laterally with the palatoglossal and palatopharyngeal folds

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28
Q

General sensory innervation to soft palate?

A

Lesser palatine n.

29
Q

Blood supply to the soft palate?

A

ascending palatine a from facial a

30
Q

Sulcus terminalis

A

V-shaped groove that divides the dorsal surface of the tongue into an anterior ORAL surface and posterior PHARYNGEAL surface

31
Q

Oral surface

A

faces superiorly and is covered with lingual papillae

32
Q

Filiform papillae

A

long, thread-like general sensory nerve endings

33
Q

Fungiform papillae

A

pink spots among filiform, contain TASTE BUDS

34
Q

Vallate papillae

A

large, flat, located just anterior to sulcus terminalis; contain TASTE BUDS

35
Q

Foliate papillae

A

small, lateral folds of lingual mucosa on the side of the tongue, contain TASTE BUDS

36
Q

Pharyngeal surface

A

faces posteriorly into oropharynx contains TAST BUDS and LINGUAL TONSILS

37
Q

Foramen Caecum:

A

apex of sulcus terminalis, represents site of origin of thyroglossal duct/thyroid gland (develops here and migrates inferiorly)

38
Q

Sublingual caruncle

A

where the duct of submandibular gland opens

39
Q

Sublingual fold

A

fold of mucous membrane containing the openings of the ducts of the sublingual gland

40
Q

Intrinsic muscles of tongue

A

arise from midline and intertwine with each other innervated by HYPOGLOSSAL (Sup/Inf longitudinal, Vertical, and Transverse)

41
Q

Extrinsic muscles of the tongue

A

intertwine with intrinsic muscles of the tongue, innervated by HYPOGLOSSAL (except palatoglossal - CNX)

42
Q

Styloglossus

A

retracts tongue and draws it up;styloid process to inserts on side of tongue

43
Q

Hyoglossus

A

depresses tongue and draws the sides down; body and greater horn of hyoid to side of tongue

44
Q

What nerves and vessels cours with hyoglossus

A

hypoglossal and lingual n course on the superficial surface of hyoglossal and lingual a, courses deep

45
Q

Genioglossus

A

depresses and protrudes tongue, from genial tubercles to dorsum of tongue

46
Q

Fissured tongue

A

Down Syndrome, Psoriasis, and Sjoren syndrome

47
Q

Geographic tongue

A

papillary atrophy on dorsal surface of tongue, smooth patch surrounded by raised creeping borders, mottled

48
Q

Hair tongue

A

excess keratin accumulates on filiform papillae (tan to black, darker if bacteria and debris accumulates) smokers, poor hygiene, antibiotics

49
Q

General Sensory to tongue

A

Anterior 2/3: Lingual n.
Posterior 1/3: Glossopharyngeal n.
Root of tongue: Internal laryngeal (Vagus)

50
Q

Special Sensory to tongue

A

Anterior 2/3: Chorda Tympani (Facial)
Posterior 1/3: Glossopharyngeal
Root of tongue: Vagus

51
Q

Motor innervation to tongue; one exception

A

ALL muscles are hypoglossal, EXCEPT PALATOGLOSSUS (VAGUS)

52
Q

Blood supply to tongue

A

dorsal branch of lingual a. and deep branch of lingual a to tip

53
Q

Mylohyoid

A

raises hyoid bone and floor of mouth during swallowing; mylohyoid line to hyoid bone (innervated by nerve to mylohyoid)

54
Q

Geniohyoid

A

pulls hyoid bone superiorly; genial tubercles to body of hyoid (innervated by C1 coursing with hypoglossal)

55
Q

Parotid gland visceral motor innervation

A

CN9 -> lesser petrosal -> otic ganglion -> auriculotemporal

56
Q

Submandibular gland

A

posterior edge of mylohyoid, superficial to hyoglossus

57
Q

Submandibular duct

A

medial from gland to cross lingual n. and opens into the sublingual caruncle

58
Q

Visceral motor to submandibular gland

A

Facial n chorda tympani-> lingual n. -> submandibular ganglion -> lingual n.

59
Q

Blood supply to submandibular gland

A

sublingual branch of lingual a. and submental branch of facial a.

60
Q

Sublingual gland

A

almond-shaped, inferior to sublingual folds

61
Q

Sublingual ducts open into

A

crease of sublingual fold

62
Q

Lymphatics of head and neck (Superficial lymph nodes)

A

Occipital nodes, posterior auricular nodes, preauricular nodes, superficial cervical, submandibular, and submental nodes

63
Q

Lymphatics of head and neck (Deep lymph nodes)

A

Located along internal carotid artery, upper/lower deep nodes divided by the omohyoid m.

64
Q

Extension of deep nodes

A

retropharyngeal space, pretracheal nodes, paratracheal nods, and prelaryngeal nodes

65
Q

Deep nodes drain to

A

brachiocephalic junction

66
Q

Lymphatics of tongue

A

Deep cervical, submandibular, and submental

67
Q

Posterior 1/3 of tongue lymph drainage

A

drains bilaterally, so metastases could be found on either side

68
Q

Tip and central portion of tongue lymph drainage

A

less likely to drain bilaterally

69
Q

HPV and Oropharyngeal cancer

A

HPV can persist and cause squamous cell cancers (HPV 16 leading cause of oropharyngeal cancer) can also cause, cervix, penis and anus cancer

Anatomy (14 decks)

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