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Chapter 01: Oral Cavity
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Brand/Isselhard: Anatomy of Orofacial Structures, 8th Edition
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MULTIPLE CHOICE ww
1. A diastema is a space between two teeth in the same arch. When this occurs
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between the maxillary central incisors, it is often the result of a pronounced
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labial frenum.
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a. Both statements are true.
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b. The first statement is true; the second statement is false.
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c. The first statement is false; the second statement is true.
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d. Both statements are false.
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ANS: A ww
A space, or lack of contact area, between any two teeth in the same arch is called
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a diastema. When a diastema occurs between the maxillary central incisors, it is
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often the result of a pronounced labial frenum extending to the crest of the
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alveolar ridge and possibly over the ridge. This band of firm connective tissue
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causes the erupting incisors to be pushed aside resulting in a diastema, or space.
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Correction of a diastema usually involves surgical removal, or cutting, of the frenal
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tissue between teeth.
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REF: p. 3 w w ww
OBJ: To describe the boundaries and sub-boundaries of the oral cavity and the structures
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in each area
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NAT: CDA: GC I.A.6. Identify basic oral anatomy and physiology, including but not
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limited to: oral cavity. TOP:
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2. Torus palatinus is seen on the
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a. soft palate ww
b. hard palate ww
c. alveolar ridge ww
d. oral pharynx ww
ANS: B ww
Torus palatinus is excess bone growth and occurs in the midline of the hard palate.
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It may grow to varying sizes and is generally only a problem when the
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construction of a maxillary denture is necessary. In health, such bony
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protuberances, or excess bone growths, do not occur on the soft palate, alveolar
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ridge, or oral pharynx.
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REF: p. 5 w w ww
OBJ: To define the terms vestibule, oral cavity proper, mucobuccal fold, frenum, alveolar
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mucosa, gingiva, exostoses, torus palatinus, and torus mandibularis
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NAT: CDA: GC I.A.2. Identify basic oral anatomy and physiology, including but not
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limited to: bones. TOP:
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3. Contraction of which muscle raises the tongue upward?
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a. Mylohyoid
b. Palatopharyngeal
c. Palatoglossal
d. Levator glossal ww
ANS: A ww
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, Anatomy of Orofacial Structures 8th Edition Brand Test
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Bank
Contraction of the mylohyoid muscle raises the tongue. The palatopharyngeal muscle
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and the palatoglossal muscle form the posterolateral borders of the oral cavity.
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There is not a muscle by the name of levator glossal.
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REF: p. 7 w w ww
OBJ: To define the landmarks in the floor of the mouth and the hard and soft palate and
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the structures that form them
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NAT: CDA: GC I.A.4. Identify basic oral anatomy and physiology, including but not
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limited to: muscles. TOP: BLOOM: Remembering
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4. The oral vestibule is partially bordered by the lips and cheeks. The oral cavity
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proper extends posteriorly to the soft palate.
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a. Both statements are true.
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b. The first statement is true; the second statement is false.
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c. The first statement is false; the second statement is true.
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d. Both statements are false.
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ANS: B ww
The oral vestibule is the space or potential space that exists between the lips or
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cheeks and teeth. In an edentulous person, the vestibule would extend between the
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lips or cheeks and the alveolar ridges. The oral cavity proper is surrounded by
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teeth or alveolar ridges and extends all the way back to the palatine tonsils. This
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includes the region from the floor of the mouth upward to the hard and soft
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palates.
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REF: p. 2 w w ww
OBJ: To describe the boundaries and sub-boundaries of the oral cavity and the structures
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in each area
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NAT: CDA: GC I.A.6. IdentifyNbasR ic oIr al aG
natoBm.y C
andMphysiology, including but not
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USN
limited to: oral cavity. TOP: BLOOM:
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TRemembering
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5. Each of the following is true of the uvula EXCEPT one. Which one is the
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ww EXCEPTION?
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 downwardly projecting muscle.
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d. It is necessary for swallowing.
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ANS: D ww
The uvula is a downwardly projecting muscular tissue located at the midline of the
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most posterior portion of the hard palate. It is NOT necessary for swallowing.
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REF: p. 6 w w ww
OBJ: To define the landmarks in the floor of the mouth and the hard and soft palate and
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the structures that form them
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NAT: CDA: GC I.A.6. Identify basic oral anatomy and physiology, including but not
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limited to: oral cavity. TOP:
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6. The circumvallate papillae are located on the hard palate, buccal mucosa, and
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floor of the mouth. The papillae found on the tongue are the filiform,
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fungiform, vallate, foliate, and incisive.
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a. Both statements are true.
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b. The first statement is true; the second statement is false.
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c. The first statement is false; the second statement is true.
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, Anatomy of Orofacial Structures 8th Edition Brand Test
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Bank
d. Both statements are false.
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ANS: D ww
All papillae listed in both statements are located on the tongue with the exception
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of the incisive papilla, which is located on the hard palate. Note that the incisive
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papilla is a singular structure, thus the different spelling. There are no papillae
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located on either the buccal mucosa or the floor of the mouth.
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REF: p. 7 w w ww
OBJ: To define the landmarks in the floor of the mouth and the hard and soft palate and
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the structures that form them
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NAT: CDA: GC I.A.6. Identify basic oral anatomy and physiology, including but not
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limited to: oral cavity. TOP:
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7. Each of the following structures can readily be viewed when examining the
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ww oral cavity EXCEPT one. Which one is the EXCEPTION?
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a. Fovea palatinae ww
b. Tonsillar pillars ww
c. Laryngeal pharynx ww
d. Sublingual fold ww
ANS: C ww
The laryngeal pharynx is located below the oral pharynx and cannot be seen while
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examining the oral cavity. The fovea palatinae, the tonsillar pillars, and the
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sublingual fold can be seen when examining the oral cavity. Fovea palatinae are
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small depressions in mucosa on either side of the posterior nasal spine indicating
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the junction of the hard and soft palate. Tonsillar pillars are folds of tissue that
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partially surround the tonsils. The sublingual fold extends
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backward on either side of t hNe floRor I
submandibular gland.
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U S N T of t hGe mBo.
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h a nMd is situated just superior to the
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REF: p. 2 | pp. 6-7
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OBJ: To describe the boundaries and sub-boundaries of the oral cavity and the structures
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in each area
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NAT: CDA: GC I.A.6. Identify basic oral anatomy and physiology, including but not
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limited to: oral cavity. TOP:
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8. Each of the following structures is located within the hard palate EXCEPT one.
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Which one is the EXCEPTION?
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a. Incisive papilla ww
b. Rugae
c. Greater palatine foramina ww ww
d. The anterior and posterior pillars
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ANS: D ww
The anterior and posterior pillars are located posterior to the soft palate. The
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posterior pillar is also called the palatopharyngeal arch or fold. The anterior pillar
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is also called the palatoglossal arch or fold. The tonsils lie between the anterior
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and posterior pillars.
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The incisive papilla and rugae are located on the anterior portion of the hard
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palate. The greater palatine foramina are located in the posterior portions of the
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hard palate lingual to the second and third maxillary molars.
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REF: w w pp. 5-6 ww
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