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NDBE Part 1: Anatomical Sciences > Oral Cavity > Flashcards

Oral Cavity Flashcards

1
Q

The lateral ant 2/3 of the tongue drains into what lymph node?

A

submandibular

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2
Q

The apex of the tongue drains into what lymph node?

A

submental

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3
Q

The posterior 1/3 and central tongue drain into what lymph node?

A

jugo-digastric node

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4
Q

What drains into the submental nodes?

A

tip of tongue
mandibular inciros/gingiva
anterior lower lip and floor of mouth

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5
Q

what drains into submandibular nodes?

A

anterior palate
lateral lips and floor of mouth
anterior nasal cavity
all teeth except mandibular incisors

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6
Q

The anterior 2/3 of the tongue drains into what lymph node?

A

submandibular and jugulo-omohyoid

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7
Q

The lingual/palatine tonsils drain into what node?

A

jugulo-digastric node

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8
Q

What drains into the retropharyngeal node?

A 
pharyngeal tonsil
paranasal sinuses
nasal cavity
naso/oropharynx
posterior palate
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9
Q

Filiform tastebuds

A

most numerous
do not contain taste buds
avascular

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10
Q

Circumvallate tastebuds

A

serous only within von Ebner’s glands

around sulcus terminals (V)

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11
Q

Foliate tastebuds

A

on lateral surface of tongue

non-functional

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12
Q

Pharyngeal tonsils

A

at nasopharynx
pseudostratifed columnar ciliated
no lymph, sinus or crypts
surrounded by CT and epithelium

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13
Q

Palatine tonsils

A

isthmus of focuses, sides of posterior oropharynx
no sinuses
has crypts and lymph

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14
Q

Lingual tonsils

A

on dorsum of tongue

have lymph follicle each with a single crypt

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15
Q

Parotid gland

A

serous secretions
Stenson’s duct
n: lesser petrosal, otic ganglion, auriculotemporal
a: superficial temporal, transverse facial

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16
Q

Submandibular gland

A 
mixed secretions
Whartons duct
n: chorda tympani, submandibular ganglion
a: facial 
highest volume of secretions per day
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17
Q

Sublingual glands

A

mucous secretions
Rivian ducts
n: chorda tympani, submandibular
a: lingual, sublingual

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18
Q

von Ebner’s glands

A

minor glands in circumvallate papilla

secrete serous fluid

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19
Q

palatine glands

A

mucous

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20
Q

hard palate gland secretions

A

anterior: fat
posterior: mucous

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21
Q

Ant teeth are supplied by what n?

A

ASA

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22
Q

Pre molar and MB root of 1st M are supplied by what n?

A

MSA

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23
Q

What does the PSA n supply?

A

DB and L root of 1st Molar, 2nd and 3rd molar

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24
Q

What n. supply the gag reflex?

A

Affarent: CN IX, nucleus solitarius, spinal trigeminal nucleus

Efferent: CN X, nucleus ambiguous

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25
what causes the change from preameloblasts to ameloblasts?
touching of odontoblast processes
26
Where are Sharpey's fibers located?
bundle bone | cementum
27
Incremental lines of enamel
Line of retzius
28
Embryonic derivative of enamel
ectoderm
29
Formative cells: enamel
enamel organ
30
What structures come from dental papilla (ectomesenchyme)
dentin | pulp
31
What structures come from dental sac (mesenchyme)
cementum alveolar bone PDL
32
Where is gnarled enamel primarily found?
cusp tips
33
Where are enamel tufts primarily found?
DEJ to inner 1/3 of enamel | hypo calcified fan-shaped enamel
34
What are perikymata?
shallow depressions on enamel surface where lines of retries terminate
35
Where are enamel lamellae primarily found?
DEJ to crown surface | hypocalcified enamel
36
What are enamel spindles?
short dentinal tubules year the DEJ | trapped odontoblastic processes
37
what are the alternating dark and lines of teeth called?
Hunter-Schreger bands
38
What are the growth rings in dentin that run at right angles to the dentin tubules?
Von Ebner lines
39
What are contour lines of Owen?
adjoining parallel imbrication lines in stained dentin
40
What would you use to distinguish dentin of the crown and dentin of the root?
presence of tomes granular layer | near the DEJ
41
What is the primary fiber found in mantle dentin?
Korff's | first dentin formed (CEJ and CDJ)
42
What type of dentin is the majority?
intertubular
43
what type of dentin contains dead tracts?
coronal
44
What type of dentin contains Tomes granular layer?
radicular
45
Where is acellular cementum primarily found?
coronal 2/3 of root | thin at CEJ
46
Where is cellular cementum primarily found?
apical 1/3 of root thick at CEJ compensates for occlusal forces and passive eruption
47
What makes up the enamel organ?
IEE stellate reticulum OEE
48
At what stage of development does DI and AI occur?
Bell
49
What does the dental lamina degenerate to?
epithelial rests of Serres
50
IEE from what structures
enamel organ: enamel, HERS
51
Tooth with most likely bifurcated root
Mandibular canine
52
If the Mand 2nd pre molar splits it's root which root will it be?
Facial
53
Most likely premolar to have 1 root and 1 canal?
mandibular 2nd pre
54
largest crown
mandibular canine
55
2nd largest crown
max central
56
Widest MD
○ Overall ­ Mandibular 1st Molar ○ Primary ­ Mandibular 2nd Molar ○ Anterior ­ Maxillary Central Incisor
57
Widest FL
○ Overall ­ Maxillary 1st Molar ○ Primary ­ Maxillary 2nd Molar ○ Anterior ­ Maxillary Canine
58
Pulp chamber wider MD > FL
Max central
59
Wider L > F
○ Primary Maxillary 2nd Molar ○ Permanent Maxillary 1st Molar ○ 3­cusp variety Mandibular 2nd Premolar
60
Longest (cusp tip to root)
○ Maxillary Canine (27.0 mm) | ○ Mandibular Canine (27.0 mm)
61
Longest root (CEJ to apex)
Max canine (17.0 mm)
62
Tallest crown (Inciso-gingivally)
○ Mandibular Canine (11.0 mm) ○ Maxillary Central Incisor (10.5 mm) ○ Maxillary Canine (10.0 mm)
63
Smallest anatomical crown
Man Central Incisor
64
Most symmetrical anatomical crown
○ Anterior ­ Mandibular Central Incisor | ○ Posterior ­ Maxillary 2nd Premolar
65
Narrowest MD
Mand central
66
Best developed lingual anatomy
Max lateral
67
Only LG groove
Max lateral
68
Only ML groove
Mand 1st PM
69
Only MM Developmental Groove
Max 1st PM
70
Only supplemental marginal grooves
Max molars
71
Smallest embrasures (equal in size)
Facial: between Mandibular Central Incisors Lingual: between Mandibular Central Incisors
72
Most likely to be congenitally missing
3rd Molars | Mand 2nd pre molars
73
Most often impacted
3rd Molars Max canines Mand 2nd pre molars

NDBE Part 1: Anatomical Sciences (16 decks)

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