Test Bank for Dental Assisting for Modern Dental Assisting, 14th Edition (ISBN 978-0-323-80660-2) All 41 Chapters

Test Bank For Dental Assisting for Mo
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dern Dental Assisting 14th Edition
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chapters 1-42 complete
Editorsn:
JeffreynR.nSmithn&nDebbienS.nRobinson

,Chaptern1.nOralnEmbryologynandnHistology



1. nWhichnofnthenfollowingnisnthenprocessnbynwhichnthencellsnofnthenfertilizedneggndividenandnf
ormnanballnofncellsnduringnembryonicndevelopment?
A. Cleavage
B. Differentiation
C. Organogenesis
D. Implantation
Answer:nA.nCleavage
Rationale:nCleavagenisnthenseriesnofnrapidnmitoticndivisionsnthatnoccurnafternfertilization,nl
eadingntonthenformationnofnanballnofncellsnknownnasnthenmorula.
DIF:nEasy
TOP:nEmbryonicndevelopmentn
MSC:nMultiplenChoice
2. Duringnthenfirstnweeknofnembryonicndevelopment,nthenfertilizedneggnbecomesnanstructurenc
alledna:
A. Zygote
B. Blastocyst
C. Morula
D. Embryo
Answer:nB.nBlastocyst
Rationale:nAfternfertilizationnandncleavage,nthenballnofncellsn(morula)nformsnintonanb
lastocyst,nwhichnimplantsnintonthenuterinenwall.
DIF:nEasy
TOP:nEmbryonicndevelopmentn
MSC:nMultiplenChoice
3. Thenoralncavitynbeginsntondevelopnduringnwhichnofnthenfollowingnstagesnofnembryonicnd
evelopment?
A. Zygote
B. Fetal
C. Pre-implantation
D. Embryonic
Answer:nD.nEmbryonic
Rationale:nThendevelopmentnofnthenoralncavitynstartsnduringnthenembryonicnstage,naroundnt
henthirdnweeknofnpregnancy,nasnthenfacialnstructuresnbeginntonform.
DIF:nModerate
TOP:nOralncavityndevelopmentn
MSC:nMultiplenChoice
4. Thenprocessnbynwhichnthenneuralntubenformsnandnbeginsntondevelopnintonthenbrainnandns
pinalncordnisnknownnas:
A. Gastrulation
B. Neurulation
C. Cleavage
D. Organogenesis

, Answer:nB.nNeurulation
Rationale:nNeurulationnisnthenprocessnwherenthenneuralntubenforms,nwhichnlaterngivesnrisent
onthencentralnnervousnsystemn(brainnandnspinalncord).
DIF:nModerate
TOP:nNeuralndevelopmentn
MSC:nMultiplenChoice
5. Whichnofnthenfollowingnisnthenprimarynfunctionnofnthenmesodermnlayerninnembryonicnd
evelopment?
A. Formationnofnthennervousnsystem
B. Developmentnofnthenskinnandnhair
C. Formationnofnmuscles,nbones,nandncirculatorynsystems
D. Formationnofnthendigestivensystem
Answer:nC.nFormationnofnmuscles,nbones,nandncirculatorynsystems
Rationale:nThenmesodermnlayerngivesnrisentonstructuresnsuchnasnmuscles,nbones,nandnthenc
irculatorynsystemnduringnembryonicndevelopment.
DIF:nModeratenT
OP:nGermnlayers
MSC:nMultiplenChoice
6. Thentermn"histology"nrefersntonthenstudynof:
A. Thenstructurenandnfunctionnofntissues
B. Thendevelopmentnofnorgans
C. Thenstructurenofncells
D. Thendevelopmentnofnembryos
Answer:nA.nThenstructurenandnfunctionnofntissues
Rationale:nHistologynisnthenstudynofntissues,nincludingntheirnstructurenandnfunction,nandnt
heirnroleninnthenbody.
DIF:n EasynTOP
:nHistology
MSC:nMultiplenChoice
7. Thenenamelnofnthentoothnisnderivednfromnwhichnembryonicntissue?
A. Ectoderm
B. Mesoderm
C. Endoderm
D. Neuralncrest
Answer:nA.nEctoderm
Rationale:nEnamel,nthenhardnouternsurfacenofnthentooth,ndevelopsnfromnthenectodermalnl
ayernofnthenembryo.
DIF:nModerate
TOP:nToothndevelopmentn
MSC:nMultiplenChoice
8. Thendevelopmentnofnthenfacenandnoralncavitynduringnembryonicndevelopmentninvolvesnf
usionnofnwhichnstructures?
A. Palatalnshelves
B. Maxillarynandnmandibularnprocesses
C. Frontalnnasalnprocess
D. BothnBnandnC

, Answer:nD.nBothnBnandnC
Rationale:nThendevelopmentnofnthenfacenandnoralncavityninvolvesnthenfusionnofnthen
maxillarynandnmandibularnprocesses,nasnwellnasnthenfrontalnnasalnprocess.
DIF:nModerate
TOP:nFacialndevelopmentn
MSC:nMultiplenChoice
9. Whichnstructurenisnresponsiblenfornthenformationnofnthenteethnduringnembryonicnd
evelopment?
A. Neuralncrest
B. Ectoderm
C. Mesoderm
D. Endoderm
Answer:nA.nNeuralncrest
Rationale:nThenneuralncrestncellsnplaynancrucialnroleninnthenformationnofnthenteethnduringne
mbryonicndevelopment.
DIF:nModerate
TOP:nToothnformationn
MSC:nMultiplenChoice
10. Thenfirstnindicationnofntoothndevelopmentnoccursnduringnwhichnweeknofnembryonicnd
evelopment?
A. 2ndnweek
B. 5thnweek
C. 6thnweek
D. 7thnweek
Answer:nC.n6thnweek
Rationale:nThenfirstnindicationnofntoothndevelopmentnappearsnduringnthen6thnweeknofne
mbryonicndevelopment,nwhennthendentalnlaminanforms.
DIF:nModerate
TOP:nToothndevelopmentn
MSC:nMultiplenChoice
11. Thenprocessnofnossificationnrefersnto:
A. Thenformationnofnbloodncells
B. Thenformationnofnbone
C. Thendevelopmentnofnthenskin
D. Thendevelopmentnofnthendigestivensystem
Answer:nB.nThenformationnofnbone
Rationale:nOssificationnisnthenprocessnbynwhichnbonentissuenisnformednfromncartilagenorno
thernconnectiventissue.
DIF:nModerate
TOP:nBonendevelopmentn
MSC:nMultiplenChoice
12. Whichnofnthenfollowingnisnankeynfeaturenofnthenhistologicalnstructurenofnenamel?
A. Itnisncomposednofncollagennfibers
B. Itnisnavascularnandnhasnnonlivingncells
C. Itncontainsnmanynbloodnvessels
D. Itnhasnanhighncontentnofnwater