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Oral Anatomic Landmarks
Oral Anatomic Landmarks
61
Anatomy
Graduate
07/12/2012

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Term
Ala
Definition
Flap of skin covering nostrils ("wings")
Term
Alveolar mucosa
Definition
thin red mucosa loosely bound to the underlaying alveolar bone (mucosa in between attached gingiva and the mucobuccal fold or mucolabial fold (of the vestibule)
Term
Gonial angle
Definition
junction of the posterior border of the ramus and the inferior
border of body of the mandible (corner of the jaw bone)
Term
Attached gingiva
Definition
pink, stippled gingiva that is firmly attached to the necks of teeth and alveolar crest
Term
Buccal mucosa
Definition
thin red mucosa overlaying the cheeks
Term
Buccal frenum
Definition
fibromuscular fold attaching gingiva to cheek
Term
Circumvallate papillae
Definition
large circular papilla (about 2mm in diameter) about 12 of them are found in a v-shaped row on the posterior portion of the body of the tongue
Term
Columella
Definition
fleshy external portion in between the nostrils (superior to the filtrum)
Term
Labial commisure
Definition
the lateral and medial junctions of the upper and lower lips
Term
Orbital commisure
Definition
the lateral and medial junctions of the eyelids
Term
Conjunctival sac
Definition
the space between the red conjunctivum of the eyeball and the transparent conjunctivum of the eyeball
Term
Dorsal surface of the tongue
Definition
top of tongue, contains papilla
Term
Filiform papillae
Definition
most numerous papillae, pinkish grey in color and project as tapering threadlike points (on the body of the tongue)
Term
Floor of the mouth
Definition
space between the medial aspect of the body of the mandible (above the myohyloi line) and the base of the tongue
Term
Foliate papilla
Definition
found on the lateral margins of the tongue as 3-4 short vertical folds (on posterior portion of body)
Term
Foramen cecum
Definition
small pit posterior to the apex of the ā€œVā€ shape of the circumvallate papillae
Term
Fovea palatini
Definition
small depressions found on either side of the posterior portion of the palatine raphe
Term
Fungiform papilla
Definition
bright red globular papilla scattered throughout the filiform papillae (found mainly at the tip/margins of the tongue)
Term
Glabella
Definition
midline prominence just above the bridge of the nose between the eyebrows
Term
Hamular notch
Definition
depression posterior to maxillary tuberosity
Term
Hard palate
Definition
bony front portion of the palate
Term
Helix
Definition
Outer rim of ear
Term
Antihelix
Definition
Inner rim of ear
Term
Incisive papilla
Definition
an elevation in the hard palate directly posterior to the maxillary central incisors
Term
Iris
Definition
ring-shaped membrane surrounding the pupil of the eye
Term
Lacrimal gland
Definition
structure secreting tears found in the upper outer corner of the eye
Term
Lacrimal lake
Definition
small, raised triangular area in the medial commissure of the eye (tearduct)
Term
Lingual frenum
Definition
fibromuscular fold attaching gingiva to tongue
Term
Lingual tonsil
Definition
larger, rounded elevations, or nodules, composed of lymphoid tissue beneath a thin layer of epithelium in the posterior 1/3 of the tongue
Term
Mandibular labium
Definition
lower lip
Term
Mandibular labial frenum
Definition
fibromuscular fold attaching gingiva to lip originating inferior to 24 &25
Term
Maxillary labium
Definition
upper lip
Term
Maxillary labial frenum
Definition
fibromuscular fold attaching gingiva to lip originating superior to 8 & 9
Term
Maxillary tuberosity
Definition
the rounded elevation of bone distal to the last
maxillary molar
Term
Midpalatine raphe
Definition
ridge of tissue in midline of hard palate posterior to the incisive papilla
Term
Nares
Definition
nostrils
Term
Nasion
Definition
bridge of nose
Term
Nasolabial fold (groove)
Definition
grove from lateral portion of nose to lateral portion of lips
Term
Oropharynx
Definition
posterior wall of oral cavity
Term
Palatine tonsil
Definition
rounded masses of lymphoid tissue occupying the space between the anterior tonsillar pillar (palatoglossal arch) and the posterior tonsillar pillar (palatopharyngeal arch)
Term
Palatoglossal arch (anterior tonsillar pillar)
Definition
anterior arch running from the soft palate to the lateral
aspects of the tongue
Term
Palatopharyngeal arch (posterior tonsillar pillar)
Definition
posterior border of the soft palate that continues
laterally to blend with the lateral wall of the pharynx
Term
Parotid duct (Stenson's)
Definition
duct in the buccal mucosa, entering the oral cavity just opposite the maxillary 2nd molar
Term
Parotid papilla
Definition
opening of the parotid duct (in buccal mucosa opposite maxillary 2nd molar)
Term
Philtrum (filtrum)
Definition
wide shallow depression extending from nose to edge of upper lip (vermillion border)
Term
Pterygomandibular raphe
Definition
thin fibrous band running just behind the last mandibular molar (an origin point of the buccinator muscle)
Term
Pupil
Definition
dark opening in the center of the eye
Term
Retromolar pad
Definition
depression posterior to mandibular molars (between the anterior border of the ramus and the temporal crest)
Term
Rugae
Definition
6 or so transverse ridges of tissue radiating laterally from the incisal papilla (directly posterior to the maxillary incisors in the hard palate)
Term
Sclera
Definition
white outer layer of the eye
Term
Soft palate
Definition
The fleshy, flexible part toward the back of the roof of the mouth
Term
Sublingual (submandibular) caruncles
Definition
two openings in papillae on either side of the lingual frenum
Term
Sublingual fold (ridge)
Definition
ridge running posteriorly and laterally in a horseshoe shape under the tongue (thin layer of tissue overlaying the sublingual salivary glands)
Term
Submandibular duct (Wharton's)
Definition
two papillae on either side of the lingual frenum
Term
Supratonsillar fossa
Definition
void directly superior to the palatine tonsil (walls of void are formed by the palatoglossal fold and the palatopharyngeal fold)
Term
Tragus
Definition
Protrusion on the ear near TMJ
Term
Antitragus
Definition
Protrusion on ear superior to earlobe
Term
Tubercle of the lip
Definition
Depression in maxillary lip
Term
Uvula
Definition
midline pendulum projection from the soft palate
Term
Vermilion border
Definition
border/surface of the lips
Term
Vestible
Definition
reflection of mucous membrane of the lip/cheek back onto the alveolar bone as alveolar mucosa
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