,Chapter 01: Oral Cavity Brand/Isselhard: Anatomy of Orofacial Structures, 9th Edition
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MULTIPLE CHOICE r
1. A diastema is a space between two teeth in the same arch. When this occurs between the
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maxillary central incisors, it is often the result of a pronounced labial frenum. a. Both
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r statements are true. r r
b. Thefirst statement is true; the second statement is false.
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c. Thefirst statement is false; the second statement is true.
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d. Both statements are false. r r r
ANS: A r
A space, or lack of contact area, between anytwo teeth in the same arch is called a diastema. When
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a diastema occurs between the maxillary central incisors, it is often the result of a pronounced
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labial frenum extending to the crest of the alveolar ridge and possibly over the ridge. This band
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of firm connective tissue causes the erupting incisors to be pushed aside resulting in a diastema,
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or space. Correction of a diastema usuallyinvolves surgical removal, or cutting, of the frenal
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tissue between teeth.
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REF: p. 3 r r
OBJ: To describe the boundaries and sub-boundaries of the oral cavity and the structures in each area
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NAT: CDA: GC I.A.6. Identify basic oralanatomy and physiology, includingbut not limited to: oral
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cavity. TOP:
r BLOOM: Remembering r r
2. Torus palatinus is seen on the r r r r r
a. soft palate r
b. hard palate r
c. alveolar ridge r
d. oral pharynx r
ANS: B r
Torus palatinus is excess bone growth and occurs in the midline of the hard palate. It may grow
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to varying sizes and is generallyonlya problem when the construction of a maxillary denture is
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necessary. In health, such bony protuberances, or excess bone growths, do not occur on the
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soft palate, alveolar ridge, or oral pharynx.
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REF: p. 5 r r
OBJ: To define the terms vestibule, oral cavityproper,mucobuccal fold, frenum, alveolar mucosa,
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gingiva, exostoses, torus palatinus, and torus mandibularis
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NAT: CDA: GC I.A.2. Identify basic oralanatomy and physiology, includingbut not limited to: bones. TOP:
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BLOOM: Remembering
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3. Contraction of which muscle raises the tongue upward? r r r r r r r
a. Mylohyoid
, b. Palatopharyngeal
c. Palatoglossal
d. Levator glossal r
ANS: A r
Contraction of the mylohyoid muscle raises the tongue. The palatopharyngeal muscle and the
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palatoglossal muscle form the posterolateral borders of the oral cavity. There is not a muscle by the
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name of levator glossal.
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REF: p. 7 r r
OBJ: To define the landmarks in thefloor of the mouthand the hard and soft palate and the structures that form
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them
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NAT: CDA: GC I.A.4. Identify basic oralanatomy and physiology, includingbut not limited to:
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muscles.
r TOP: BLOOM: Remembering r r
4. Theoral vestibule is partiallybordered bythelips and cheeks. Theoral cavityproper
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extends posteriorly to the soft palate. a. Both statements are true.
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b. Thefirst statement is true; the second statement is false.
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c. Thefirst statement is false; the second statement is true.
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d. Both statements are false. r r r
ANS: B r
The oral vestibule is the space or potential space that exists between the lips or cheeks and teeth.
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In an edentulous person, the vestibule would extend between the lips or cheeks and the alveolar
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ridges. The oral cavity proper is surrounded by teeth or alveolar ridges and extends all the way back
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to the palatine tonsils. This includes the region from the floor of the mouth upward to the hard
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and soft palates.
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REF: p. 2 r r
OBJ: To describe the boundaries and sub-boundaries of the oral cavity and the structures in each area
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NAT: CDA: GC I.A.6. Identify bUas icSoIr
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N R r
alNa naTt o m.yCanOd
G r
r
B r
Mphysiology, including but not limitedto: oral cavity. TOP: BLOOM: Remembering
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5. Each of the following is trueof the uvula EXCEPT one. Which one is the EXCEPTION?
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a. It is located at the most posterior portion of the hard palate.
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b. It is located at the midline.
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c. It is a downwardlyprojecting muscle.
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d. It is necessary for swallowing.
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ANS: D r
Theuvulais adownwardlyprojectingmusculartissue locatedat themidline ofthe most
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posterior portion of the hard palate. It is NOT necessary for swallowing.
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, REF: p. 6 r r
OBJ: To define the landmarks in thefloor of the mouthand the hard and soft palate and the structures that form
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them
r
NAT: CDA: GC I.A.6. Identify basic oralanatomy and physiology, includingbut not limited to: oral
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cavity. TOP: BLOOM: Remembering
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6. The circumvallate papillae are located on the hard palate, buccal mucosa, and floor of the
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mouth. The papillae found on the tongue are the filiform, fungiform, vallate, foliate, and
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incisive.
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a. Both statements are true. r r r
b. Thefirst statement is true; the second statement is false.
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c. Thefirst statement is false; the second statement is true.
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d. Both statements are false. r r r
ANS: D r
All papillae listed in both statements are located on the tongue with the exception of the incisive
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papilla, which is located on the hard palate. Note that the incisive papilla is a singular structure, thus
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the different spelling. There are no papillae located on either the buccal mucosa or the floor of the
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mouth.
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REF: p. 7 r r
OBJ: To define the landmarks in thefloor of the mouthand the hard and soft palate and the structures that form
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them
r
NAT: CDA: GC I.A.6. Identify basic oralanatomy and physiology, includingbut not limited to: oral
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cavity. TOP: BLOOM: Remembering
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7. Each of the following structures can readilybe viewed when examining the oral cavity
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EXCEPT one. Which one is the EXCEPTION? a. Fovea palatinae
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b. Tonsillarpillars r
c. Laryngeal pharynx r
d. Sublingual fold r
ANS: C r
The laryngeal pharynx is located below the oral pharynx and cannot be seen while examining the
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oral cavity. The fovea palatinae, the tonsillar pillars, and the sublingual fold can be seen when
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examining the oral cavity. Fovea palatinae are small depressions in mucosa on either side of the
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posterior nasal spine indicating the junction of the hard and soft palate. Tonsillar pillars are folds
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of tissue that partially surround the tonsils. The sublingual fold extends
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r bsubmandibularackward on eith gland.er side of thNe Uflo orSIof t r r r r r r r
R r
r NhG eTmB r
o.utCh OanMd is situated just superior to the r r r r r r r r
REF: p. 2 |pp. 6-7 r r rr r
OBJ: To describe the boundaries and sub-boundaries of the oral cavity and the structures in each area
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