NBDHE Board Exam Questions – Dental Hygiene Certification Practice Questions
and Study Guide
If the ventral root of a spinal nerve were sectioned, what would be the result in the tissue or
regions supplied by the nerve?
a. loss of sensation
b. loss of motor control
c. loss of sensation and movement
d. partial loss of sensation and movement - ANS ✔✔b. loss of motor control
corticospinal tract
a. fibers are located in grey columns of the cord
b. fibers come from neuron cell bodies located in the spinal cord
c. fibers synapse with neurons in the cerebellar cortex
d. fibers are descending fibers from the cells in the primary motor cortex of the frontal lobe -
ANS ✔✔d. fibers are descending fibers from the cells in the primary motor cortex of the frontal
lobe
which oral health concern is NOT shared by members of BOTH child and adolescent
populations?
a. dental caries
b. dental development
c. controlling risk factors for disease
d. periodontitis - ANS ✔✔d. periodontitis
The primary motor area of the brain is the
a. precentral gyrus
,b. postcentral gyrus
c. temporal lobe
d. occipital lobe - ANS ✔✔a. precentral gyrus
which of the following pathogens connected to periodontal disease is the MOST common?
a. prevotella intermedia
b. campylobacter rectus
c. fusobacterium nucleatum
d. prophyromonasgingivalis - ANS ✔✔d. prophyromonasgingivalis
which of the following periodontal indices would be used to complete a full mouth periodontal
assessment?
a. PI or Russell Index
b. PDI or Ramfjord Index
c. PSR
d. CPITN - ANS ✔✔b. PDI or Ramfjord Index
Which of the following functions are conducted in the dorsal columns of the spinal cord, that is,
in the fasciculus graciles and cuneatus?
a. high degree of location
b. vibratory sense
c. fine gradations of pressure
d. all of the above - ANS ✔✔d. all of the above
The neurotransmitter substance released at the postganglionic terminal of the parasympathetic
division of the autonomic nervous system is
a. norepinephrine
,b. epinephrine
c. cholinesterase
d. acetylcholine - ANS ✔✔d. acetylcholine
Bilabial creates the sounds associated with the letters b, p, and m. It is created when lips are
pressed together. These and other speech sounds are considered:
a. sound gradation
b. anatomic sound formation
c. sound irregularities
d. anatomic speech mechanisms - ANS ✔✔b. anatomic sound formation
all of the following are types of palpation used in an extraoral/intraoral examination EXCEPT
one. Which one is the EXCEPTION?
a. bilateral
b. lateral
c. digital
d. bidigital - ANS ✔✔b. lateral
Norepinephrine and epinephrine are released from
a. preganglionic and postganglionic fibers of the sympathetic nervous system
b. neuromyal junction
c. postganglionic fibers of the sympathetic nervous system and the adrenal medulla
d. all of the above - ANS ✔✔c. postganglionic fibers of the sympathetic nervous system and the
adrenal medulla
All of the following are autonomic effects on the body except regulation of
a. heart rate
, b. digestive secretion
c. skeletal muscle tone
d. glandular secretion - ANS ✔✔c. skeletal muscle tone
increased fluid in tooth tubules that deform pulp nerve endings and lead to pain response, is a
component of what theory?
a. Ad-hoc theory
b. Cold tooth theory
c. Hydrodynamic theory
d. Dental plaque organism theory - ANS ✔✔c. Hydrodynamic theory
Extreme excitement in a patient may have the following effects on organ systems:
a. increased blood pressure
b. increases gastrointestinal activity
c. relaxation of smooth muscles in bronchi
d. A and C - ANS ✔✔d. A and C
An increase in parasympathetic activity
a. increases salivation
b. increases gastrointestinal activity
c. decreases heart rate
d. All of the above - ANS ✔✔d. All of the above
Hormones
a. catalyze intracellular biochemical reactions
b. enter into chemical reactions without being degraded or depleted
and Study Guide
If the ventral root of a spinal nerve were sectioned, what would be the result in the tissue or
regions supplied by the nerve?
a. loss of sensation
b. loss of motor control
c. loss of sensation and movement
d. partial loss of sensation and movement - ANS ✔✔b. loss of motor control
corticospinal tract
a. fibers are located in grey columns of the cord
b. fibers come from neuron cell bodies located in the spinal cord
c. fibers synapse with neurons in the cerebellar cortex
d. fibers are descending fibers from the cells in the primary motor cortex of the frontal lobe -
ANS ✔✔d. fibers are descending fibers from the cells in the primary motor cortex of the frontal
lobe
which oral health concern is NOT shared by members of BOTH child and adolescent
populations?
a. dental caries
b. dental development
c. controlling risk factors for disease
d. periodontitis - ANS ✔✔d. periodontitis
The primary motor area of the brain is the
a. precentral gyrus
,b. postcentral gyrus
c. temporal lobe
d. occipital lobe - ANS ✔✔a. precentral gyrus
which of the following pathogens connected to periodontal disease is the MOST common?
a. prevotella intermedia
b. campylobacter rectus
c. fusobacterium nucleatum
d. prophyromonasgingivalis - ANS ✔✔d. prophyromonasgingivalis
which of the following periodontal indices would be used to complete a full mouth periodontal
assessment?
a. PI or Russell Index
b. PDI or Ramfjord Index
c. PSR
d. CPITN - ANS ✔✔b. PDI or Ramfjord Index
Which of the following functions are conducted in the dorsal columns of the spinal cord, that is,
in the fasciculus graciles and cuneatus?
a. high degree of location
b. vibratory sense
c. fine gradations of pressure
d. all of the above - ANS ✔✔d. all of the above
The neurotransmitter substance released at the postganglionic terminal of the parasympathetic
division of the autonomic nervous system is
a. norepinephrine
,b. epinephrine
c. cholinesterase
d. acetylcholine - ANS ✔✔d. acetylcholine
Bilabial creates the sounds associated with the letters b, p, and m. It is created when lips are
pressed together. These and other speech sounds are considered:
a. sound gradation
b. anatomic sound formation
c. sound irregularities
d. anatomic speech mechanisms - ANS ✔✔b. anatomic sound formation
all of the following are types of palpation used in an extraoral/intraoral examination EXCEPT
one. Which one is the EXCEPTION?
a. bilateral
b. lateral
c. digital
d. bidigital - ANS ✔✔b. lateral
Norepinephrine and epinephrine are released from
a. preganglionic and postganglionic fibers of the sympathetic nervous system
b. neuromyal junction
c. postganglionic fibers of the sympathetic nervous system and the adrenal medulla
d. all of the above - ANS ✔✔c. postganglionic fibers of the sympathetic nervous system and the
adrenal medulla
All of the following are autonomic effects on the body except regulation of
a. heart rate
, b. digestive secretion
c. skeletal muscle tone
d. glandular secretion - ANS ✔✔c. skeletal muscle tone
increased fluid in tooth tubules that deform pulp nerve endings and lead to pain response, is a
component of what theory?
a. Ad-hoc theory
b. Cold tooth theory
c. Hydrodynamic theory
d. Dental plaque organism theory - ANS ✔✔c. Hydrodynamic theory
Extreme excitement in a patient may have the following effects on organ systems:
a. increased blood pressure
b. increases gastrointestinal activity
c. relaxation of smooth muscles in bronchi
d. A and C - ANS ✔✔d. A and C
An increase in parasympathetic activity
a. increases salivation
b. increases gastrointestinal activity
c. decreases heart rate
d. All of the above - ANS ✔✔d. All of the above
Hormones
a. catalyze intracellular biochemical reactions
b. enter into chemical reactions without being degraded or depleted
