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Anatomy > G54: Oral Cavity > Flashcards

G54: Oral Cavity Flashcards

(69 cards)

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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
General sensory innervation to hard palate?
greater palatine n and nasopalatine n.
26
Blood supply to palate?
Greater palatine branch of the descending palatine a. and septal branches of sphenopalatine a
27
Soft palate
consists of membranous aponeurosis, skeletal muscle, and mucus membranes; continuous laterally with the palatoglossal and palatopharyngeal folds
28
General sensory innervation to soft palate?
Lesser palatine n.
29
Blood supply to the soft palate?
ascending palatine a from facial a
30
Sulcus terminalis
V-shaped groove that divides the dorsal surface of the tongue into an anterior ORAL surface and posterior PHARYNGEAL surface
31
Oral surface
faces superiorly and is covered with lingual papillae
32
Filiform papillae
long, thread-like general sensory nerve endings
33
Fungiform papillae
pink spots among filiform, contain TASTE BUDS
34
Vallate papillae
large, flat, located just anterior to sulcus terminalis; contain TASTE BUDS
35
Foliate papillae
small, lateral folds of lingual mucosa on the side of the tongue, contain TASTE BUDS
36
Pharyngeal surface
faces posteriorly into oropharynx contains TAST BUDS and LINGUAL TONSILS
37
Foramen Caecum:
apex of sulcus terminalis, represents site of origin of thyroglossal duct/thyroid gland (develops here and migrates inferiorly)
38
Sublingual caruncle
where the duct of submandibular gland opens
39
Sublingual fold
fold of mucous membrane containing the openings of the ducts of the sublingual gland
40
Intrinsic muscles of tongue
arise from midline and intertwine with each other innervated by HYPOGLOSSAL (Sup/Inf longitudinal, Vertical, and Transverse)
41
Extrinsic muscles of the tongue
intertwine with intrinsic muscles of the tongue, innervated by HYPOGLOSSAL (except palatoglossal - CNX)
42
Styloglossus
retracts tongue and draws it up;styloid process to inserts on side of tongue
43
Hyoglossus
depresses tongue and draws the sides down; body and greater horn of hyoid to side of tongue
44
What nerves and vessels cours with hyoglossus
hypoglossal and lingual n course on the superficial surface of hyoglossal and lingual a, courses deep
45
Genioglossus
depresses and protrudes tongue, from genial tubercles to dorsum of tongue
46
Fissured tongue
Down Syndrome, Psoriasis, and Sjoren syndrome
47
Geographic tongue
papillary atrophy on dorsal surface of tongue, smooth patch surrounded by raised creeping borders, mottled
48
Hair tongue
excess keratin accumulates on filiform papillae (tan to black, darker if bacteria and debris accumulates) smokers, poor hygiene, antibiotics
49
General Sensory to tongue
Anterior 2/3: Lingual n. Posterior 1/3: Glossopharyngeal n. Root of tongue: Internal laryngeal (Vagus)
50
Special Sensory to tongue
Anterior 2/3: Chorda Tympani (Facial) Posterior 1/3: Glossopharyngeal Root of tongue: Vagus
51
Motor innervation to tongue; one exception
ALL muscles are hypoglossal, EXCEPT PALATOGLOSSUS (VAGUS)
52
Blood supply to tongue
dorsal branch of lingual a. and deep branch of lingual a to tip
53
Mylohyoid
raises hyoid bone and floor of mouth during swallowing; mylohyoid line to hyoid bone (innervated by nerve to mylohyoid)
54
Geniohyoid
pulls hyoid bone superiorly; genial tubercles to body of hyoid (innervated by C1 coursing with hypoglossal)
55
Parotid gland visceral motor innervation
CN9 -> lesser petrosal -> otic ganglion -> auriculotemporal
56
Submandibular gland
posterior edge of mylohyoid, superficial to hyoglossus
57
Submandibular duct
medial from gland to cross lingual n. and opens into the sublingual caruncle
58
Visceral motor to submandibular gland
Facial n chorda tympani-> lingual n. -> submandibular ganglion -> lingual n.
59
Blood supply to submandibular gland
sublingual branch of lingual a. and submental branch of facial a.
60
Sublingual gland
almond-shaped, inferior to sublingual folds
61
Sublingual ducts open into
crease of sublingual fold
62
Lymphatics of head and neck (Superficial lymph nodes)
Occipital nodes, posterior auricular nodes, preauricular nodes, superficial cervical, submandibular, and submental nodes
63
Lymphatics of head and neck (Deep lymph nodes)
Located along internal carotid artery, upper/lower deep nodes divided by the omohyoid m.
64
Extension of deep nodes
retropharyngeal space, pretracheal nodes, paratracheal nods, and prelaryngeal nodes
65
Deep nodes drain to
brachiocephalic junction
66
Lymphatics of tongue
Deep cervical, submandibular, and submental
67
Posterior 1/3 of tongue lymph drainage
drains bilaterally, so metastases could be found on either side
68
Tip and central portion of tongue lymph drainage
less likely to drain bilaterally
69
HPV and Oropharyngeal cancer
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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