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Chapter 01: Oral Cavity
Brand/Isselhard: Anatomy of Orofacial Structures, 9th Edition
MULTIPLE CHOICE
1. A diastema is a space between two teeth in the same arch. When this occurs between the maxillary central incisors,
it is often the result of a pronounced labial frenum.
a. Both statements are true.
b. The first statement is true; the second statement is false.
c. The first statement is false; the second statement is true.
d. Both statements are false.
ANSWER: A
A space, or lack of contact area, between any two teeth in the same arch is called a diastema. When a diastema occurs
between the maxillary central incisors, it is often the result of a pronounced labial frenum extending to the crest of the
alveolar ridge and possibly over the ridge. This band of firm connective tissue causes the erupting incisors to be pushed
aside resulting in a diastema, or space. Correction of a diastema usually involves surgical removal, or cutting, of the
frenal tissue between teeth.
REF: p. 3
OBJ: To describe the boundaries and sub-boundaries of the oral cavity and the structures in each area
NAT: CDA: GC I.A.6. Identify basic oral anatomy and physiology, including but not limited to: oral cavity. TOP: BLOOM:
Remembering
2. Torus palatinus is seen on the
a. soft palate
b. hard palate
c. alveolar ridge
d. oral pharynx
ANSWER: B
Torus palatinus is excess bone growth and occurs in the midline of the hard palate. It may grow to varying sizes and is
generally only a problem when the construction of a maxillary denture is necessary. In health, such bony protuberances,
or excess bone growths, do not occur on the soft palate, alveolar ridge, or oral pharynx.
res
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of Orofacial
Structures
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of10/6/2026,
Orofacial Structures
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of Orofacial Structures A Comprehensive
of Orofacial Structures
Approach.pdf
A Comprehen
REF: p. 5
OBJ: To define the terms vestibule, oral cavity proper, mucobuccal fold, frenum, alveolar mucosa, gingiva, exostoses,
torus palatinus, and torus mandibularis
NAT: CDA: GC I.A.2. Identify basic oral anatomy and physiology, including but not limited to: bones. TOP: BLOOM:
Remembering
3. Contraction of which muscle raises the tongue upward?
a. Mylohyoid
b. Palatopharyngeal
c. Palatoglossal
d. Levator glossal
ANSWER: A
Contraction of the mylohyoid muscle raises the tongue. The palatopharyngeal muscle and the palatoglossal muscle
form the posterolateral borders of the oral cavity. There is not a muscle by the name of levator glossal.
REF: p. 7
OBJ: To define the landmarks in the floor of the mouth and the hard and soft palate and the structures that form them
NAT: CDA: GC I.A.4. Identify basic oral anatomy and physiology, including but not limited to: muscles. TOP:
BLOOM: Remembering
4. The oral vestibule is partially bordered by the lips and cheeks. The oral cavity proper extends posteriorly to the
soft palate.
a. Both statements are true.
b. The first statement is true; the second statement is false.
c. The first statement is false; the second statement is true.
d. Both statements are false.
ANSWER: B
The oral vestibule is the space or potential space that exists between the lips or cheeks and teeth. In an edentulous
person, the vestibule would extend between the lips or cheeks and the alveolar ridges. The oral cavity proper is
surrounded by teeth or alveolar ridges and extends all the way back to the palatine tonsils. This includes the region
from the floor of the mouth upward to the hard and soft palates.
REF: p. 2
OBJ: To describe the boundaries and sub-boundaries of the oral cavity and the structures in each area
NAT: CDA: GC I.A.6. IdentifyNbasRUic oSIr alNaGnatoBm.yCandMphysiol ogy, including but not limited to: oral cavity.
TOP: BLOOM: Remembering
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of Orofacial Structures A Comprehensive
of Orofacial Structures
Approach.pdf
A Comprehen
Chapter 01: Oral Cavity
Brand/Isselhard: Anatomy of Orofacial Structures, 9th Edition
MULTIPLE CHOICE
1. A diastema is a space between two teeth in the same arch. When this occurs between the maxillary central incisors,
it is often the result of a pronounced labial frenum.
a. Both statements are true.
b. The first statement is true; the second statement is false.
c. The first statement is false; the second statement is true.
d. Both statements are false.
ANSWER: A
A space, or lack of contact area, between any two teeth in the same arch is called a diastema. When a diastema occurs
between the maxillary central incisors, it is often the result of a pronounced labial frenum extending to the crest of the
alveolar ridge and possibly over the ridge. This band of firm connective tissue causes the erupting incisors to be pushed
aside resulting in a diastema, or space. Correction of a diastema usually involves surgical removal, or cutting, of the
frenal tissue between teeth.
REF: p. 3
OBJ: To describe the boundaries and sub-boundaries of the oral cavity and the structures in each area
NAT: CDA: GC I.A.6. Identify basic oral anatomy and physiology, including but not limited to: oral cavity. TOP: BLOOM:
Remembering
2. Torus palatinus is seen on the
a. soft palate
b. hard palate
c. alveolar ridge
d. oral pharynx
ANSWER: B
Torus palatinus is excess bone growth and occurs in the midline of the hard palate. It may grow to varying sizes and is
generally only a problem when the construction of a maxillary denture is necessary. In health, such bony protuberances,
or excess bone growths, do not occur on the soft palate, alveolar ridge, or oral pharynx.
res
Approach.pdf)))____________Anatomy
A Comprehensive
)))____________Anatomy
Approach.pdf*!@^#T&^TEV&^^R%^R^E&^UGS&^EFS*&S@(*EOILKSN@>(*Anatomy
of Orofacial
of Orofacial
Structures
Structures
A Comprehensive
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,res
natomy
A Comprehensive
of10/6/2026,
Orofacial Structures
3:31:26
Approach.pdf*!@^#T&^TEV&^^R%^R^E&^UGS&^EFS*&S@(*EOILKSN@>(*Anatomy
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of Orofacial Structures A Comprehensive Approach.pdf*!@^#T&^TEV&^^R%^R^E&^UGS&^EFS*&S@(*EOILKSN@
of Orofacial Structures A Comprehensive
of Orofacial Structures
Approach.pdf
A Comprehen
REF: p. 5
OBJ: To define the terms vestibule, oral cavity proper, mucobuccal fold, frenum, alveolar mucosa, gingiva, exostoses,
torus palatinus, and torus mandibularis
NAT: CDA: GC I.A.2. Identify basic oral anatomy and physiology, including but not limited to: bones. TOP: BLOOM:
Remembering
3. Contraction of which muscle raises the tongue upward?
a. Mylohyoid
b. Palatopharyngeal
c. Palatoglossal
d. Levator glossal
ANSWER: A
Contraction of the mylohyoid muscle raises the tongue. The palatopharyngeal muscle and the palatoglossal muscle
form the posterolateral borders of the oral cavity. There is not a muscle by the name of levator glossal.
REF: p. 7
OBJ: To define the landmarks in the floor of the mouth and the hard and soft palate and the structures that form them
NAT: CDA: GC I.A.4. Identify basic oral anatomy and physiology, including but not limited to: muscles. TOP:
BLOOM: Remembering
4. The oral vestibule is partially bordered by the lips and cheeks. The oral cavity proper extends posteriorly to the
soft palate.
a. Both statements are true.
b. The first statement is true; the second statement is false.
c. The first statement is false; the second statement is true.
d. Both statements are false.
ANSWER: B
The oral vestibule is the space or potential space that exists between the lips or cheeks and teeth. In an edentulous
person, the vestibule would extend between the lips or cheeks and the alveolar ridges. The oral cavity proper is
surrounded by teeth or alveolar ridges and extends all the way back to the palatine tonsils. This includes the region
from the floor of the mouth upward to the hard and soft palates.
REF: p. 2
OBJ: To describe the boundaries and sub-boundaries of the oral cavity and the structures in each area
NAT: CDA: GC I.A.6. IdentifyNbasRUic oSIr alNaGnatoBm.yCandMphysiol ogy, including but not limited to: oral cavity.
TOP: BLOOM: Remembering
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of Orofacial
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