Test Bank For Dental Assisting Instruments and Materials Guide - 23rd - 2022 All Chapters

Test Bank For Dental Assisting for
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Modern Dental Assisting 14th Edition
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Editorsg:
JeffreygR.gSmithg&gDebbiegS.gRobinson

,Chapterg1.gOralgEmbryologygandgHistology



1. Whichgofgthegfollowinggisgthegprocessgbygwhichgthegcellsgofgthegfertilizedgegggdividegandgf
ormgagballgofgcellsgduringgembryonicgdevelopment?
A. Cleavage
B. Differentiation
C. Organogenesis
D. Implantation
Answer:gA.gCleavage
Rationale:gCleavagegisgthegseriesgofgrapidgmitoticgdivisionsgthatgoccurgaftergfertilization,glea
dinggtogthegformationgofgagballgofgcellsgknowngasgthegmorula.
DIF:gEasy
TOP:gEmbryonicgdevelopmentg
MSC:gMultiplegChoice
2. Duringgthegfirstgweekgofgembryonicgdevelopment,gthegfertilizedgegggbecomesgagstructuregc
alledga:
A. Zygote
B. Blastocyst
C. Morula
D. Embryo
Answer:gB.gBlastocyst
Rationale:gAftergfertilizationgandgcleavage,gthegballgofgcellsg(morula)gformsgintogagblastocys
t,gwhichgimplantsgintogtheguterinegwall.
DIF:gEasy
TOP:gEmbryonicgdevelopmentg
MSC:gMultiplegChoice
3. Thegoralgcavitygbeginsgtogdevelopgduringgwhichgofgthegfollowinggstagesgofgembryonicgd
evelopment?
A. Zygote
B. Fetal
C. Pre-implantation
D. Embryonic
Answer:gD.gEmbryonic
Rationale:gThegdevelopmentgofgthegoralgcavitygstartsgduringgthegembryonicgstage,garoundgth
egthirdgweekgofgpregnancy,gasgthegfacialgstructuresgbegingtogform.
DIF:gModerate
TOP:gOralgcavitygdevelopmentg
MSC:gMultiplegChoice
4. Thegprocessgbygwhichgthegneuralgtubegformsgandgbeginsgtogdevelopgintogthegbraingandgs
pinalgcordgisgknowngas:
A. Gastrulation
B. Neurulation
C. Cleavage
D. Organogenesis

, Answer:gB.gNeurulation
Rationale:gNeurulationgisgthegprocessgwheregthegneuralgtubegforms,gwhichglaterggivesgrisegt
ogthegcentralgnervousgsystemg(braingandgspinalgcord).
DIF:gModerate
TOP:gNeuralgdevelopmentgMS
C:gMultiplegChoice
5. Whichgofgthegfollowinggisgthegprimarygfunctiongofgthegmesodermglayergingembryonicgd
evelopment?
A. Formationgofgthegnervousgsystem
B. Developmentgofgthegskingandghair
C. Formationgofgmuscles,gbones,gandgcirculatorygsystems
D. Formationgofgthegdigestivegsystem
Answer:gC.gFormationgofgmuscles,gbones,gandgcirculatorygsystems
Rationale:gThegmesodermglayerggivesgrisegtogstructuresgsuchgasgmuscles,gbones,gandgthegcirculat
orygsystemgduringgembryonicgdevelopment.
DIF:gModerategTOP
:gGermglayers
MSC:gMultiplegChoice
6. Thegtermg"histology"grefersgtogthegstudygof:
A. Thegstructuregandgfunctiongofgtissues
B. Thegdevelopmentgofgorgans
C. Thegstructuregofgcells
D. Thegdevelopmentgofgembryos
Answer:gA.gThegstructuregandgfunctiongofgtissues
Rationale:gHistologygisgthegstudygofgtissues,gincludinggtheirgstructuregandgfunction,gandgthei
rgrolegingthegbody.
DIF:gEasyg TOP
:gHistology
MSC:gMultiplegChoice
7. Thegenamelgofgthegtoothgisgderivedgfromgwhichgembryonicgtissue?
A. Ectoderm
B. Mesoderm
C. Endoderm
D. Neuralgcrest
Answer:gA.gEctoderm
Rationale:gEnamel,gtheghardgoutergsurfacegofgthegtooth,gdevelopsgfromgthegectodermalglayer
gofgthegembryo.

DIF:gModerate
TOP:gToothgdevelopmentgMSC
:gMultiplegChoice
8. Thegdevelopmentgofgthegfacegandgoralgcavitygduringgembryonicgdevelopmentginvolvesgf
usiongofgwhichgstructures?
A. Palatalgshelves
B. Maxillarygandgmandibulargprocesses
C. Frontalgnasalgprocess
D. BothgBgandgC

, Answer:gD.gBothgBgandgC
Rationale:gThegdevelopmentgofgthegfacegandgoralgcavityginvolvesgthegfusiongofgthegmaxillar
ygandgmandibulargprocesses,gasgwellgasgthegfrontalgnasalgprocess.
DIF:gModerate
TOP:gFacialgdevelopmentgMSC
:gMultiplegChoice
9. Whichgstructuregisgresponsiblegforgthegformationgofgthegteethgduringgembryonicg
development?
A. Neuralgcrest
B. Ectoderm
C. Mesoderm
D. Endoderm
Answer:gA.gNeuralgcrest
Rationale:gThegneuralgcrestgcellsgplaygagcrucialgrolegingthegformationgofgthegteethgduringgembryo
nicgdevelopment.
DIF:gModerate
TOP:gToothgformationg
MSC:gMultiplegChoice
10. Thegfirstgindicationgofgtoothgdevelopmentgoccursgduringgwhichgweekgofgembryonicg
development?
A. 2ndgweek
B. 5thgweek
C. 6thgweek
D. 7thgweek
Answer:gC.g6thgweek
Rationale:gThegfirstgindicationgofgtoothgdevelopmentgappearsgduringgtheg6thgweekgofgembry
onicgdevelopment,gwhengthegdentalglaminagforms.
DIF:gModerate
TOP:gToothgdevelopmentgMSC
:gMultiplegChoice
11. Thegprocessgofgossificationgrefersgto:
A. Thegformationgofgbloodgcells
B. Thegformationgofgbone
C. Thegdevelopmentgofgthegskin
D. Thegdevelopmentgofgthegdigestivegsystem
Answer:gB.gThegformationgofgbone
Rationale:gOssificationgisgthegprocessgbygwhichgbonegtissuegisgformedgfromgcartilagegorgoth
ergconnectivegtissue.
DIF:gModerate
TOP:gBonegdevelopmentg
MSC:gMultiplegChoice
12. Whichgofgthegfollowinggisgagkeygfeaturegofgtheghistologicalgstructuregofgenamel?
A. Itgisgcomposedgofgcollagengfibers
B. Itgisgavasculargandghasgnoglivinggcells
C. Itgcontainsgmanygbloodgvessels
D. Itghasgaghighgcontentgofgwater