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Head and neck radiology > Oral Cavity > Flashcards

Oral Cavity Flashcards

(86 cards)

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1
Q

Oral cavity is separated from oropharynx by

A

Soft palate, anterior tonsillar pillars and circumvallate papillae

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2
Q

Non-fascial liner area in the oral cavity that is superomedial to mylohyoid muscle

A

Sublingual space

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3
Q

Located inferolateral to mylohyoid muscle

A

Submandibular space

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4
Q

The root of tongue is made up of

A

Genioglosssus-geniohyoid complex and lingual septum

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5
Q

Superior border of oral cavity

A

Hard palate, maxillary alveolar ridge

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6
Q

Lateral border of oral cavity

A

Cheek-buccal space

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7
Q

Inferior border of oral cavity

A

Mylohyoid muscle, mandibular alveolar ridge and teeth

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8
Q

Posterior border of oral cavity

A

Soft palate, anterior tonsillar pillars and lingual tonsil

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9
Q

Sublingual space is between __________ inferolaterally and __________ medially

A

Mylohyoid and genioglossus

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10
Q

Anteriorly, sublingual space communicate beneath

A

Frenulum

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11
Q

Posteriorly, sublingual space communicates with

A

posterosuperior aspect of submandibular space and inferior parapharyngeal space

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12
Q

Forms the “horizontal horseshoe” in deep oral tongue

A

Frenulum

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13
Q

“Vertical horseshoe” space between hyoid bone below and mylohyoid muscle sling above

A

Submandibular space

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14
Q

Submandibular space communicates posteriorly with

A

Inferior parapharyngeal space and posterior sublingual space

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15
Q

Submandibular space continues inferiorly as

A

Anterior cervical space

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16
Q

Inferiorly root of tongue ends at

A

Mylohyoid sling

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17
Q

Anteriorly, root of tongue ends at

A

Mandibular symphysis

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18
Q

Large, fan-shaped muscle arising anteriorly from superior mental spine on inner surface of symphysis menti of mandible; inserts along entire length of under surface of tongue

A

Genioglossus

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19
Q

Thin and quadrilateral shaped arising from body and greater cornu of hyoid bone; passes vertically upward to insert into side of tongue

A

Hyoglossus

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20
Q

Forms floor of mouth

A

Mylohyoid muscle

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21
Q

Small triangular shaped region of mucosa behind last molar on mandibular ramus

A

Retromolar trigone

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22
Q

Anatomical crossroads of oral cavity, oropharynx, soft palate, buccal space, floor of mouth, masticator space and PPS

A

Retromolar trigone

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23
Q

Fibrous band extending from posterior mandibular mylohyoid line to medial pterygoid plate hamulus
Perifascial route of spread for SCCa

A

Pterygomandibular raphe

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24
Q

Fascia of sublingual space

A

Not lined by fascia

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25
Submandibular space is lined by
Superficial layer of DCF
26
Anterior extent of oral mucosal space
Skin-vermillion junction of upper and lower lips
27
Posterosuperior extent of oral mucosal space
Junction of hard and soft palate
28
Posteroinferior extent of oral mucosal space
Junction of tongue at circumvallate papillae
29
Refers to mucosa overlying alveolar process of maxilla
Upper alveolar ridge
30
Mucosa overlying alveolar process of mandible
Lower alveolar ridge
31
Key neurovascular structures of oral cavity
CN9, CN12 Lingual nerve (branch of V3) Lingual artery and vein
32
Posterior aspect of sublingual space is divided into medial and lateral compartments by
Hypoglossal muscle
33
Motor to intrinsic and extrinsic muscles of tongue
Hypoglossal nerve
34
Intrinsic muscles of tongue
Inferior lingual, vertical and transverse muscles
35
Extrinsic muscles of tongue
Genioglossus, hyoglossus, styloglossus and palatoglossus
36
Sensation to anterior 2/3 of oral tongue
Lingual nerve branch of V3
37
Anterior 2/3 of tongue taste and parasympathetic secreto-motor fibers to submandibular ganglion/ gland
Chorda tympani
38
Lateral compartment contents of sublingual space
Hypoglossal nerve Lingual nerve Sublingual glands and ducts Submandibular gland deep portion and submandibular duct
39
Medial compartment contents
Glossopharymgeal nerve | Lingual artery and vein
40
Provides sensation to posterior 1/3 of tongue
Glossopharyngeal nerve
41
Submandibular gland innervation
Parasympathetic secretomotor supply from chorda tympani (CN7)
42
Submandibular space fascia
Superficial layer DCF
43
Oral tongue is the
Anterior 2/3 not including tongue base | Freely mobile portion
44
Root of tongue
Lingual septum, inferior portion of genioglossus muscles and geniohyoid muscles
45
Crescent-shaped region of mucosa overlying mylohyoid and hyoglossus muscles, extending from inner aspect of lower alveolar ridge to undersurface of anterior oral tongue
Floor of mouth
46
Base of tongue is the
Posterior 1/3 of tongue in oropharynx
47
Muscles of tongue that move tongue body and alters its shape
Extrinsic tongue muscles
48
Extrinsic tongue muscles supplied by CN12
Genioglossus, hyoglossus, styloglossus
49
Extrinsic tongue muscle innervated by CN10
Palatoglossus
50
Tongue muscles that alters shape of tongue during deglutition and speech
Intrinsic tongue muscles
51
Triangle-shaped area of mucosa posterior to last mandibular molar that covers anterior surface of lower ascending ramus of mandible
Retromolar trigone
52
Thick fascial band that extends between posterior border of mandibular mylohyoid ridge and hamulus of medial pterygoid plate
Pterygomandibular raphe
53
Retromandibular trigone cephalad tip
Level of base of pterygoid plate
54
Fascial band of pterygomandibular raphe extends from
Posterior border of mylohyoid ridge of mandible to hamulus of medial pterygoid plate
55
Posterior margin of pterygomandibular raphe
Buccinator muscle
56
Anterior margin of pterygomandibular raphe
Superior constrictor muscle
57
Contains articular surface of TMJ
Condylar head and neck of mandible
58
Where temporalis muscle inserts
Coronoid process of mandible
59
What separates the 2 coronoid process of mandible
Mandibular notch
60
Divides the masticator space into lateral and medial compartments
Mandibular ramus
61
Transmits the inferior alveolar nerve
Mandibular foramen
62
Small, osseous lip extending from anterior aspect of mandibular foramen
Lingula
63
Mandibular body is fused in anterior midline at
Symphysis menti
64
Alveolar process consists of
External buccal and internal lingual plates
65
Paired external openings of mandibular canal that transmits mental nerve
Mental foramen
66
Bony ridge on lingual mandible body which is site of attachment of mylohyoid muscle
Mylohyoid ridge
67
Contains inferior alveolar nerve and vessels
Mandibular canal
68
Innervates ipsilateral premilars and molars
Inferior alveolar nerve
69
Provides sensory innervation to skin and mucosa of lower lip and labial gingiva
Mental nerve
70
Innervates ipsilateral canine and incisors
Incisive nerve
71
Represents inferior aspect of maxillary bone
Maxillary alveolar ridge
72
Anterior hard palate and alveolar ridge that contains incisive foramen (nasopalatine nerve)
Premaxilla
73
Forms anterior 2/3 of hard palate
Palatine process of maxillary bone
74
Forms posterior 1/3 hard palate
Horizontal plate of palatine bone
75
Supplies sensory fibers to anterior hard palate
Nasopalatine nerve
76
Comes down greater palatine canal in palatine bone. | Supplies sensation to posterior 2/3 of hard palate
Greater palatine nerve
77
Supplies sensiry fibers to palatine tonsil
Lesser palatine nerve
78
Densest material in body of tooth
Enamel
79
Encases pulp of tooth
Dentin
80
Nourishes the dentin
Pulp
81
Acts as a medium for attachung fibers of periodontal ligament to tooth
Cementum
82
Radiolucency surrounding tooth root
Periodontal space
83
If malignancy affects skin of upper lip, hard palate, soft palate check for
V2 perineural tumor
84
Major locations to identify V2 perineural tumor extend from
Incisive canal-greater palatine foramen to root entry zone of V in lateral pons
85
If malignant tumor of skin of chin, mandibular alveolar ridge or masticator space, check for
V3 perineural tumor
86
In checking for V3 perineural tumor, pay special attention to
Inferior alveolar canal, mandibular foramen, masticator space

Head and neck radiology (15 decks)

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