NBDHE Exam Questions and Answers (Graded A)

NBDHE Exam Questions and Answers (Graded A)

a cyst is - Answers-an abnormal pathologic sac
a cavity lined by epithelial tissue
enclosed by connective tissue
diagnosed on the basis of histologic appearance and location

.in which layer of the epidermis are cells undergoing mitosis most likely to be seen? -
Answers-stratum basal

.hypersensitivity of the dentinal surface to external stimuli is caused by... - Answers-fluid
movement within the tubules that transmit signals to the nerves in the pulp chamber

.which tissues have nerve innervations? - Answers-pulp
periodontal ligament

.because of the proximity of odontoblastic cell bodies to the nerve terminal endings in
the tooth, clinical exposure of dentin may result in sensitivity. what is the location of
odontoblastic bodies? - Answers-pulp

.tooth structure loss that occurs from pathologic wear of teeth by foreign substance is
called - Answers-abrasion

.the cres of the alveolar bone is usually apical to the cemento-enamel junction by.. -
Answers-0.75 to 1.49 mm

.how do cysts show up radiographically - Answers-with a well defined border

.how do soft tissues cysts show up radiographically - Answers-they do not show up on
radiographs

.the tissue lining of an unhealthy gingival sulcus consists of - Answers-nonkeratinized
epithelium with rete pegs

.the bottom of the gingival sulcus is marked by the.. - Answers-junctional epithelium

.which tissues have little or no keratinization? - Answers-sulcular epithelium

.what does bleeding caused by probing indicate? - Answers-ulceration of crevicular
epithelium

.which tissue changes result in erythematous gingiva - Answers-increased
vascularization of the underlying vascular connective tissue

,.what type of connective tissue underlies the epithelium of the gingival? - Answers-
fibrous which gives it its firm consistency

.in gingivitis, poor tissue tone is caused by - Answers-destruction of collagen fibers

.definitive diagnosis of furcation involvement is made by - Answers-clinical probing
because it cant always be seen in radiographs

.enamel projections of the root surface are attributed to the differentiation of - Answers-
hertwig's epithelial root sheath

.hertwig's epithelial root sheath is derived from the - Answers-reduced enamel
epithelium

.hertwing's epithelial root sheath is entirely composed of - Answers-inner and outer
enamel epithelium

.when is root formation completed? - Answers-1-4 years after eruption

.remnants of hertwig's epithelial root sheath found in the periodontal ligament of a
functioning tooth are called - Answers-rests of malassez

.the stippled texture of gingiva may be attributed to - Answers-connective tissue
projections

.the color of gingiva may be attributed to - Answers-keratinization
thickness of the epithelium
blood supply
pigmentation

.a specialized periosteum which forms and resorbs bone and cementum is called -
Answers-periodontal ligament

.what is the outer less calcified layer of cementum that results in cementum resorbing
less readily than bone ? - Answers-cementoid

.cementum is a product of - Answers-periodontal ligament

.which cells does the periodontal ligament contain? - Answers-osteoblasts
osteoclasts
cementoblasts
cementoclasts

.a cleft-like absence of the alveolar cortical plate resulting in a denuded root surface is
called - Answers-dehiscence

,.characteristics of bundle bone (alveolar bone proper) - Answers-adjacent to the
periodontal ligament and containing sharpey's fibers

.which tissues of the normal periodontium is the alveolar bone directly adjacent to? -
Answers-periodontal ligament and gingival connective tissue

.the cells that are important in the formation of the principal fibers of the periodontal
ligament are - Answers-fibroblasts

.the types of epithelia found lining the oral cavity include - Answers-keratinized and
nonkeratinized stratified squamous

.epithelial tissues are characterized by - Answers-little intercellular substance and many
cells

.embryonically, the mandible is derived from the - Answers-first branchial arch

.the anterior portion, or body, of the tongue develops from the - Answers-mandibular
process

.a cleft lip occurs when the maxillary process fails to fuse with the - Answers-globular
process

.one of the first structures of the face to develop in the primitive embryo is the -
Answers-stomodeum

.the lateral palatine processes initially grow downward toward the future floor of the
mouth. this is caused by the presence of the - Answers-tongue

.when a cleft of the alveolar process is present, it occurs between the - Answers-lateral
incisor and canine

.the cementum is derived from the - Answers-dental sac

.during embryonic development, neural crest cells migrate to the branchial arches and
surround the - Answers-mesoderm

.enamel is derived from the - Answers-ectoderm

.dental papilla is part of the.. - Answers-tooth germ that forms dentin and pulp

.the periodontal ligament is derived from the - Answers-dental sac

.dentin is the product of the - Answers-dental papilla

.in what phase is a cell highly active and growing - Answers-interphase

, .statement that best describes mucous membranes - Answers-found in body cavities
that open to the body's exterior

.type of connective tissues - Answers-blood
adipose tissue
reticular tissue
cartilage

.where is smooth muscle tissue found in the body - Answers-in the walls of hollow
organs

.which connective tissue secretes antibodies - Answers-plasma cells

.where would articular cartilage and bursae most likely be found - Answers-the knee

.moving the femur forward when walking is an example of - Answers-flexion

.the portion of the nervous system that regulates the GI tract - Answers-enteric nervous
system

.the depolarizing phase of a nerve impulse is caused by a - Answers-rush of sodium
ions into the neuron

.the speed of nerve impulse conduction is increased by - Answers-myelination

.what part of the brain contains the centers that control the heart rate and breathing
rhythm - Answers-medulla

.what part of the brain serves as a link between the nervous and endocrine systems -
Answers-hypothalamus

.what part of the brain is concerned with memory, reasoning, judgment, and intelligence
- Answers-association areas

.the facial nerve controls - Answers-the muscles of facial expression, and functions in
the conveyance of taste sensations from the anterior two thirds of the tongue and oral
cavity

.the cranial nerves involved in controlling the movement of the eyeball - Answers-
oculomotor
trochlear
abducens

.which part of the nervous system contains centers that regulate the autonomic nervous
system - Answers-hypothalamus