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