NBDHE UPDATED EXAM SCRIPT QUESTIONS AND
ANSWERS GUARANTEE A+
✔✔Each of the following is a suprahyoid muscle EXCEPT one. Which one is the
EXCEPTION?
A. Mylohyoid
B. Geniohyoid
C. Stylohyoid
D. Sternohyoid - ✔✔D. Sternohyoid
✔✔Cervical lymph nodes run along which muscle? - ✔✔Sternocleidomastoid
✔✔For each numbered muscle, select the most closely linked facial expression from the
list provided.
1. Mentalis
2. Risorius
3. Corrugator supercilii
4. Levator anguli oris
5. Buccinator
a. frowning
b. raising chin and protruding
c. chewing
d. stretching lips
e. smiling - ✔✔1. Mentalis- b. raising chin and protruding
2. Risorius- d. stretching lips
3. Corrugator supercilii- a. frowning
4. Levator anguli oris- e. smiling
5. Buccinator c. chewing
✔✔T/F The first branchial arch is also called the mandibular arch. The cartilage forming
within the mandibular arch is known Reichert cartilage. - ✔✔The first statement is true,
and the second statement is false.
✔✔Each of the following is a period of prenatal development EXCEPT one. Which one
is the EXCEPTION?
A. Fetal
B. Ovulation
C. Embryo
D. Preimplantation - ✔✔B. Ovulation
✔✔Which cells responsible for producing dentin? - ✔✔Odontoblasts
,✔✔Each of the following is a component of the tooth germ EXCEPT Which one is the
EXCEPTION?
A. Enamel organ
B. Dental sac
C. Dental lamina
D. Dental papilla
E. Dental follicle - ✔✔C. Dental lamina
✔✔Division of a cell into two daughter cells occurs during which phase of mitosis? -
✔✔Telophase
✔✔The inner cells of the dental papilla will develop into which structure? - ✔✔Pulp
✔✔The earliest indication of a part or an organ during prenatal development is referred
to as the - ✔✔Inner enamel epithelium
✔✔Which stage of tooth development occurs between the 11th and 12th weeks of
prenatal development? - ✔✔Bell
✔✔Which of the following cells is/are DIRECTLY responsible for immunoglobulin
production? - ✔✔Plasma
✔✔Incremental lines that stain brown in preparations of mature enamel are - ✔✔lines of
Retzius.
✔✔Which period of prenatal development occurs during months 3 to 9? - ✔✔Fetal
✔✔From the following list, select the structures of the embryo that begin development in
week 4 of prenatal development
face
neck
palate
tongue
placenta - ✔✔Face, Neck, Tongue
✔✔Each cell facilitates the exfoliation of a primary tooth EXCEPT one. Which one is the
EXCEPTION?
A. Ameloblasts
B. Osteoclasts
C. Odontoclast
,D. Cementoclast - ✔✔A. Ameloblast
✔✔The cervical loop is responsible for development of - ✔✔roots
✔✔Down syndrome is a developmental disturbance that occurs during which period of
prenatal development? - ✔✔Preimplantation
✔✔T/F The incomplete developmental division of a tooth germ is called FUSION.
Fusion place during initiation stage of tooth development. - ✔✔Both statements are
false.
✔✔Which is the most common cell found in the lamina propria of the oral mucosa? -
✔✔Fibroblast
✔✔The cells responsible for the development of the periodontal ligament come from the
- ✔✔Dental sac
✔✔The cusp of Carabelli is found on which permanent molars? - ✔✔# 3 # 14
✔✔T/F Eight bones compose the neurocranium, surrounding the brain. Fifteen bones
compose the viscerocranium, or the bones of the face. - ✔✔The first statement is true,
and the second statement false
✔✔The sphenoid bone is composed of the - ✔✔temporal fossa , superior orbital fissure
of the orbit, base of skull anterior to occipital
✔✔Anatomically, the inferior alveolar artery supplies which structure? - ✔✔Mandibular
teeth
✔✔The functions of the lymphatic system include all EXCEPT one. Which one is the
EXCEPTION?
A. Filter fluids
B. Fight infection
C. Produce lymphocytes
D. Produce thrombocytes
E. Return plasma to venous bloodstream - ✔✔D. Produce thrombocytes
✔✔T/F The abducens (VI), trochlear (IV), and oculomotor (II) nerves all provide
innervation to the the eye. These nerves provide sensory innervation. - ✔✔The first
statement is true, and the second is false.
, ✔✔The temporomandibular joint (TMJ) Is capable of which two types of movement? -
✔✔Rotation, gliding
✔✔Which arteries are the terminal branches of the external carotid artery? -
✔✔Maxillary, superficial, temporal
✔✔How many teeth are present in an individual with a full deciduous dentition? - ✔✔20
✔✔Which is NOT characteristic feature of the primary dentition? - ✔✔Thin dentin
✔✔Which teeth have wider crowns mesiodistally than faciolingually? - ✔✔#7 and # 10
✔✔Each is an important function of the cementoenamel junction (CEJ) EXCEPT one.
Which one is the EXCEPTION?
A. Prevention of caries
B. Self- cleansing properties
C. Food deflection resulting in gingival inflammation
D. Health and maintenance of periodontal tissue in interproximal spaces - ✔✔A.
Prevention of caries
✔✔T/F The clinical crown-to-root ratio is always the same. However, the anatomic
crown-to-root ratio may change. - ✔✔Both statements are false .
✔✔T/F There is relatively constant mesial movement of the molars to compensate for
proximal abrasion. Relatively consistent occlusal forces result bone remodeling. -
✔✔Both statements are correct and related.
✔✔T/F Enamel is formed by ameloblasts, which derived from the ectoderm. The
ectoderm also signals the mesoderm to start the development of dentin and pulp. -
✔✔Both statements are true.
✔✔Cellular metabolism occurs in the - ✔✔mitochondria.
✔✔T/F During facial development, the two structures forming The major facial
structures are the frontonasal process and the pharyngeal (branchial) arch I. This
process begins during week 6 in utero. - ✔✔The first statement is true, and the second
statement is false.
✔✔Each is a paranasal sinus EXCEPT one. Which the EXCEPTION?
Frontal
Mandibular
ANSWERS GUARANTEE A+
✔✔Each of the following is a suprahyoid muscle EXCEPT one. Which one is the
EXCEPTION?
A. Mylohyoid
B. Geniohyoid
C. Stylohyoid
D. Sternohyoid - ✔✔D. Sternohyoid
✔✔Cervical lymph nodes run along which muscle? - ✔✔Sternocleidomastoid
✔✔For each numbered muscle, select the most closely linked facial expression from the
list provided.
1. Mentalis
2. Risorius
3. Corrugator supercilii
4. Levator anguli oris
5. Buccinator
a. frowning
b. raising chin and protruding
c. chewing
d. stretching lips
e. smiling - ✔✔1. Mentalis- b. raising chin and protruding
2. Risorius- d. stretching lips
3. Corrugator supercilii- a. frowning
4. Levator anguli oris- e. smiling
5. Buccinator c. chewing
✔✔T/F The first branchial arch is also called the mandibular arch. The cartilage forming
within the mandibular arch is known Reichert cartilage. - ✔✔The first statement is true,
and the second statement is false.
✔✔Each of the following is a period of prenatal development EXCEPT one. Which one
is the EXCEPTION?
A. Fetal
B. Ovulation
C. Embryo
D. Preimplantation - ✔✔B. Ovulation
✔✔Which cells responsible for producing dentin? - ✔✔Odontoblasts
,✔✔Each of the following is a component of the tooth germ EXCEPT Which one is the
EXCEPTION?
A. Enamel organ
B. Dental sac
C. Dental lamina
D. Dental papilla
E. Dental follicle - ✔✔C. Dental lamina
✔✔Division of a cell into two daughter cells occurs during which phase of mitosis? -
✔✔Telophase
✔✔The inner cells of the dental papilla will develop into which structure? - ✔✔Pulp
✔✔The earliest indication of a part or an organ during prenatal development is referred
to as the - ✔✔Inner enamel epithelium
✔✔Which stage of tooth development occurs between the 11th and 12th weeks of
prenatal development? - ✔✔Bell
✔✔Which of the following cells is/are DIRECTLY responsible for immunoglobulin
production? - ✔✔Plasma
✔✔Incremental lines that stain brown in preparations of mature enamel are - ✔✔lines of
Retzius.
✔✔Which period of prenatal development occurs during months 3 to 9? - ✔✔Fetal
✔✔From the following list, select the structures of the embryo that begin development in
week 4 of prenatal development
face
neck
palate
tongue
placenta - ✔✔Face, Neck, Tongue
✔✔Each cell facilitates the exfoliation of a primary tooth EXCEPT one. Which one is the
EXCEPTION?
A. Ameloblasts
B. Osteoclasts
C. Odontoclast
,D. Cementoclast - ✔✔A. Ameloblast
✔✔The cervical loop is responsible for development of - ✔✔roots
✔✔Down syndrome is a developmental disturbance that occurs during which period of
prenatal development? - ✔✔Preimplantation
✔✔T/F The incomplete developmental division of a tooth germ is called FUSION.
Fusion place during initiation stage of tooth development. - ✔✔Both statements are
false.
✔✔Which is the most common cell found in the lamina propria of the oral mucosa? -
✔✔Fibroblast
✔✔The cells responsible for the development of the periodontal ligament come from the
- ✔✔Dental sac
✔✔The cusp of Carabelli is found on which permanent molars? - ✔✔# 3 # 14
✔✔T/F Eight bones compose the neurocranium, surrounding the brain. Fifteen bones
compose the viscerocranium, or the bones of the face. - ✔✔The first statement is true,
and the second statement false
✔✔The sphenoid bone is composed of the - ✔✔temporal fossa , superior orbital fissure
of the orbit, base of skull anterior to occipital
✔✔Anatomically, the inferior alveolar artery supplies which structure? - ✔✔Mandibular
teeth
✔✔The functions of the lymphatic system include all EXCEPT one. Which one is the
EXCEPTION?
A. Filter fluids
B. Fight infection
C. Produce lymphocytes
D. Produce thrombocytes
E. Return plasma to venous bloodstream - ✔✔D. Produce thrombocytes
✔✔T/F The abducens (VI), trochlear (IV), and oculomotor (II) nerves all provide
innervation to the the eye. These nerves provide sensory innervation. - ✔✔The first
statement is true, and the second is false.
, ✔✔The temporomandibular joint (TMJ) Is capable of which two types of movement? -
✔✔Rotation, gliding
✔✔Which arteries are the terminal branches of the external carotid artery? -
✔✔Maxillary, superficial, temporal
✔✔How many teeth are present in an individual with a full deciduous dentition? - ✔✔20
✔✔Which is NOT characteristic feature of the primary dentition? - ✔✔Thin dentin
✔✔Which teeth have wider crowns mesiodistally than faciolingually? - ✔✔#7 and # 10
✔✔Each is an important function of the cementoenamel junction (CEJ) EXCEPT one.
Which one is the EXCEPTION?
A. Prevention of caries
B. Self- cleansing properties
C. Food deflection resulting in gingival inflammation
D. Health and maintenance of periodontal tissue in interproximal spaces - ✔✔A.
Prevention of caries
✔✔T/F The clinical crown-to-root ratio is always the same. However, the anatomic
crown-to-root ratio may change. - ✔✔Both statements are false .
✔✔T/F There is relatively constant mesial movement of the molars to compensate for
proximal abrasion. Relatively consistent occlusal forces result bone remodeling. -
✔✔Both statements are correct and related.
✔✔T/F Enamel is formed by ameloblasts, which derived from the ectoderm. The
ectoderm also signals the mesoderm to start the development of dentin and pulp. -
✔✔Both statements are true.
✔✔Cellular metabolism occurs in the - ✔✔mitochondria.
✔✔T/F During facial development, the two structures forming The major facial
structures are the frontonasal process and the pharyngeal (branchial) arch I. This
process begins during week 6 in utero. - ✔✔The first statement is true, and the second
statement is false.
✔✔Each is a paranasal sinus EXCEPT one. Which the EXCEPTION?
Frontal
Mandibular
