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Oral Anatomy > Lec I - The Oral Anatomy > Flashcards

Lec I - The Oral Anatomy Flashcards

1
Q

what is the definition of dental anatomy acc to Wheeler

A

“study of the development, morphology, function, and identity of each of the teeth in the human dentitions, as well as the way in which the teeth relate in shape, form, structure, color, and function to the other teeth in the same dental arch and to the teeth in the opposing arch.”

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2
Q

nine areas of the facial regions

A

Forehead, Temples, Orbital Area, External Nose, Zygomatic (malar) area, Mouth and Lips, Cheeks, Chin, External Ear

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3
Q

region of the face; extending from the eyebrows to the hairline

A

Forehead

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4
Q

region of the face; temporal area posterior to the eyes

A

Temples

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5
Q

region of the face; containing the eyes and covered by the eyelids

A

Orbital area

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6
Q

region of the face; Orbital area

A

Zygomatic (malar) area

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7
Q

what are the 13 landmarks of the face?

A
  1. Outer Canthus of the Eye
  2. Inner Canthus of the Eye
  3. Ala of the Nose
  4. Philtrum
  5. Tragus of the Ear
  6. Nasion
  7. Glabella
  8. Bridge of the nose
  9. Septum
  10. Anterior Noris
  11. Mental Protuberance
  12. Angle of the Mandible
  13. Zygomatic Arch
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8
Q

the fold of tissue at the outer layer of the eyelids

A

Outer Canthus of the Eye

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9
Q

a fold of tissue at the inner layer of the eyelids

A

Inner Canthus of the Eye

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10
Q

winglike tip on the outer side of each nostril

A

Ala of the Nose

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11
Q

shallow depression extending from the area below the middle of the nose to the center of the upper lip

A

Philtrum

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12
Q

the triangular cartilage projection anterior to the external opening of the ear

A

Tragus of the Ear

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13
Q

the midpoint between the eyes just below the eyebrows

A

Nasion:

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14
Q

the smooth surface of the frontal bone

A

Glabella

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15
Q

tissue that divides the nasal cavity into two nasal fossae

A

Septum

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16
Q

nostril

A

Anterior Noris

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17
Q

part of the mandible that forms the chin

A

Mental Protuberance

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18
Q

lower posterior of the ramus

A

Angle of the Mandible

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19
Q

the prominence of the cheek

A

Zygomatic Arch

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20
Q
  • two fleshy structures which encircle the orifice of the mouth
  • covered externally by the skin and internally by a mucous membrane
  • gateway to the oral cavity
A

Lips (labia oris; labialis; labia)

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21
Q
  • muscle within the lips surrounding the mouth

- encircles the opening of the mouth functioning as a sphincter for the oral cavity

A

Orbicularis Oris Muscle

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22
Q

corners of the lips

A

Labial Commissure

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23
Q

the red portion of the lip

A

Vermillion Zone

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24
Q

the transition zone between mucous membrane and skin

A

Vermillion Border

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25
Q

the vermillion border is bounded externally on the face by the ____

A

Mucutaneous Junction

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26
Q

the junction between the skin of the face and the vermillion border of the lips

A

Mucutaneous Junction

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27
Q

the vermillion border is bounded internally by the

A

wet line

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28
Q

the junction between the outer vermillion (dry) and inner smooth and moist mucosa

A

wet/wet-dry line

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29
Q

a small projection of tissue on the middle of the upper lip

A

Labial Tubercle

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30
Q

a shallow depression extending from the corner of the nose (ala) to the corner of the lip from the cheek

A

Nasolabial Groove

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31
Q

a shallow linear depression that separates the lower lip from the chin

A

Labiomental Groove

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32
Q

groove that appear with age at the corners of the mouth to delineate the lower lip from the cheeks

A

Labiomarginal Sulci

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33
Q

→entrance to the digestive system

→ forms the common pathway to the respiratory system

→upper and beginning of the digestive

A

Oral Cavity

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34
Q

the Oral Cavity is bounded:

A
  • anteriorly - lips
  • laterally - cheeks
  • superiorly - palate
  • inferiorly - floor of the mouth
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35
Q

the oral cavity communicates externally through the opening between the lips and internally with the pharynx through the

A

fauces or tonsillar pillars

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36
Q

the two divisions of the oral cavity

A

Oral Vestibule and Oral Cavity Proper

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37
Q

the area between the lips and cheeks and the teeth

A

Oral Vestibule

38
Q

area located internal / behind the teeth

A

Oral Cavity Proper

39
Q
  • the region medial to the teeth that houses the tongue
A

Oral Cavity Proper

40
Q

functions of the oral cavity

A
  1. Mastication
  2. Passage of air
  3. speech
41
Q

the two divisions of the oral vestibule

A
  1. Anterior Vestibule

2. Posterior Vestibule

42
Q

the Oral Vestibule is bounded:

A
  • Anteriorly - lips(labia)

- Laterally - cheeks(bucca)

43
Q

the oral vestibule communicates with the exterior of the body through

A

orifice of the mouth or the oral sphincter (also called the rima)

44
Q
  • space enclosed within the alveolar processes and the teeth

- area that houses the tongue

A

Oral Cavity Proper

45
Q

the Oral Cavity Proper communicates with the pharynx through a narrow inlet called

A

isthmus of fauces

46
Q
  • the deepest part of the vestibules; U-shaped pocket that is continuous throughout the anterior and posterior areas
  • “that place between the lips and the front teeth”
A

Fornix Vestibuli/Vestibular Fornix or sulcus

47
Q

the point of which the mucosa of the lips or the cheeks meet the alveolar mucosa

A

Mucolabial Fold(towards the lips) /Mucobuccal Fold (towards the cheeks)

48
Q

lines the oral cavity

A

Oral Mucous Membrane/Oral Mucosa

49
Q

Oral Mucosa is named acc to

A

location

50
Q

the inner surface of the lips

A

Labial Mucosa

51
Q

inner surface of the cheeks

A

Buccal Mucosa

52
Q
  • covers the alveolar bone that supports the teeth
  • loosely attached; highly vascular
  • reddish color
A

Alveolar Mucosa

53
Q
  • commonly referred to as the “gums”

- the tissue that covers the cervical portions of the teeth and the alveolar processes of the jaws

A

Gingiva

54
Q

the appearance of healthy gums:

A
  • pink or coral pink in color
  • resilient and firm and does not bleed when probed
  • surface texture is stippled
  • margins are thin in profile and knife-edged
55
Q

gingival tissue that tightly adheres to the alveolar process surrounding the roots of the teeth

A

Attached Gingiva

56
Q

line of demarcation between the attached gingiva and alveolar mucosa

A

Mucogingival Junction

57
Q
  • border of the gingiva that surrounds the teeth in a collar-like fashion
A

Marginal Gingiva (Free Gingiva)

58
Q

the marginal gingiva from the attached gingiva

A

Free Gingival Groove

59
Q

coronal part of the marginal gingiva

A

Free Gingival Crest

60
Q

the portion of the gingiva that fills the area between two adjacent

A

Interdental Papilla/Gingiva

61
Q

the space between the free gingiva and the tooth surface

A

Gingival Sulcus

62
Q

elevation of tissue distal to maxillary last molar

A

Maxillary Tuberosity

63
Q

Pear-shaped elevation of movable tissue distal to the mandibular last molar

A

Retromolar Pad

64
Q

sickle golds of tissue attaching the lips, cheeks, and the tongue to the alveolar bone

A

Frenum

65
Q

two types of frenum

A

Labial frenum and Buccal Frenum

66
Q
  • an elevated fold of tissue of soft mucous tissue extending from the alveolar mucosa of the two central incisors to the labial mucosa
  • can be seen on both maxillary and mandibular
A

Labial Frenum

67
Q
  • an elevated fold of tissue extending from the alveolar mucosa above the canine or premolar to the buccal mucosa
  • can be seen on both maxillary and maxilla
A

Buccal Frenum

68
Q
  • small elevation of tissue opposite the maxillary second molar on the buccal mucosa and contains the terminal end of the parotid Duct (Stensen’s Duct) of the parotid salivary gland
  • where saliva comes from
A

Parotid Papilla

69
Q
  • yellowish ectopic sebaceous glands found on the buccal mucosa near the corners of the mouth and have no clinical significance
A

Fordyce Granules/Spots

70
Q

raised white line of keratinized tissue on the buccal mucosa that runs parallel to the line of the occlusal plane

A

Linea Alba

71
Q

forms the roof of the mouth and separates the oral and nasal cavities

A

Palate

72
Q

two divisions of the palate

A

a. Hard palate

b. soft palate

73
Q
  • bony anterior 2/3 of the palate covered by a masticatory, keratinized mucosa
  • immovable
A

Hard palate

74
Q
  • posterior 1/3 of the palate
  • made up of muscular tissue and not supported by bone
  • movabel
A

soft palate

75
Q
  • small rounded elevation of tissue found on the midline of the hard palate that covers the incisive foramen
  • directly behind the two maxillary central incisors
  • site of injection for anesthesia of the nasopalatine nerve
A

Incisive Papilla

76
Q

ridged line that extends form behind the incisive papilla down the middle of the hard palate

A

Palatine Raphe

77
Q

series of palatal tissue elevations, or wrinkles, located on the palate just posterior the maxillary anterior teeth

A

Palatine Rugae

78
Q

functions:

  1. tactilely sensing objects or food position
  2. aiding the tongue’s proper placement for the production of certain speech sounds
A

Palatine Rugae

79
Q

small fleshy structure hanging from the center of the posterior border of the soft palate

A

Uvula

80
Q

folds of tissue extending from the palate to tongue

A

Anterior Pillar/Palatoglossal Arch

81
Q

folds of tissue extending from palate to pharynx

A

Posterior Pillar/Palatopharyngeal Arch

82
Q
  • masses of lymphoid tissue found between the anterior and posterior pillar of fauces
  • first line of defense as part of the immune system
A

Palatine Tonsils

83
Q
  • pair of pits in the soft palate located on either side of the center line near but posterior to the vibrating line
  • openings of ducts of minor palatine mucous glands
A

Palatine Fovea

84
Q
  • junction between the hard and soft palate
  • 2mm anterior to the palatine fovea
  • area wherein denture is not supposed to reach→ the patient will gag if ma reach sng denture ang VL
A

Vibrating Line (Ah-Line)

85
Q

opening of the oral cavity to the throat

A

Fauces

86
Q

area of the oral cavity that joins with the throat of the pharynx

A

Oropharynx

87
Q

excess (hyperplastic) bony growth projecting outward from the bone surface such as torus palatinus or mandibular torus (torus palatinus - if found sa palate; mandibular torus/torus manidbularis - if found on the mandibular area)

A

Exostosis

88
Q

a bony cluster or mass may be found along the midline of the hard palate (palatine torus) or along the inner surface of the jaw (mandibular torus)

A

Torus

89
Q
  • two small, raised folds of tissue found on either side of the lingual frenum
  • they each contain a salivary duct opening for Wharton’s Duct (duct leading from the Submandibular Salivary Gland)
A

Sublingual Caruncles

90
Q

elevated folds of soft tissue extended medially along the floor of the mouth towards the tongue

A

Sublingual Folds

91
Q
  • horseshoe-shaped area that follows the curve of the dental arch
  • marks the end of the alveolar ridge and the beginning of the floor of the mouth
A

Sublingual Sulcus

Oral Anatomy (9 decks)

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