6th Edition by Fehrenbach
All Chapters 1 – 12 Complete
, Table of Contents x x
1. Chapter 1 Introduction to Head and Neck Anatomy
x x x x x x x
2. Chapter 2 Surface Anatomy
x x x
3. Chapter 3 Skeletal System
x x x
4. Chapter 4 Muscular System
x x x
5. Chapter 5 Temporomandibular Joint
x x x
6. Chapter 6 Vascular System
x x x
7. Chapter 7 Glandular Tissue
x x x
8. Chapter 8 Nervous System
x x x
9. Chapter 9 Anatomy of Local Anesthesia
x x x x x
10. Chapter 10 Lymphatic System
x x x
11. Chapter 11 Fasciae and Spaces
x x x x
12. Chapter 12 Spread of Infection
x x x x
,Chapterx01:xIntroductionxtoxHeadxandxNeckxAnatomy
Fehrenbach:xIllustratedxAnatomyxofxthexHeadxandxNeck,x6thxEdition
MULTIPLExCHOICE
1. Whichxsurfacexofxthexbodyxisxvisualizedxbyxthexclinicianxwhenxperformingxanxextraoralxe
xaminationxofxthexpatient’sxeyes?
a. Anterior
b. Posterior
c. Superior
d. Lateral
ANS:x A
Feedback
A Thexpatient’sxeyesxarexvisualizedxonxthexanteriorxsurfacexofxthexpatient’sxbody.
B Thexpatient’sxeyesxwouldxNOTxbexeasilyxvisualizedxonxthexposteriorxofxthexpatient’
sxbody.
C Thexpatient’sxeyesxwouldxNOTxbexeasilyxvisualizedxonxthexsuperiorxsurfacexofxthexpa
tient’sxbody.
D Thexpatient’sxeyesxwouldxNOTxbexeasilyxvisualizedxonxthexlateralxsurfacexofxthexpati
ent’sxbody.
DIF: Comprehension REF:x p.x3
OBJ:x 2xTOP:x CDA:xGeneralxChairside,xI.xB.xPreliminaryxPhysicalxEx
amination
MSC:x NBDHE,xScientificxB a s iN
s xfoR
rxDeInt alG
HygB
ie.neCP raM
ctice,x1.1.1xHeadxandxNeckxAnatomy
U S N T O
2. WhichxofxthexfollowingxisxCORRECTxconcerningxthexsagittalxplanexofxthexbody?
a. Parallelxtoxthexmedianxplane
b. Parallelxtoxthexfrontalxplane
c. Parallelxtoxthexhorizontalxplane
d. Parallelxtoxthexcoronalxplane
ANS:x A
Feedback
A Axsagittalxplanexisxparallelxtoxthexmedianxplane.
B AxsagittalxplanexisxNOTxparallelxtoxthexfrontalxplanexbutxperpendicular.
C Axhorizontalxplanexisxperpendicularxtoxthexmedianxplane.xAxsagittalxplanexisxparal
lelxtoxthexmedianxplane.xThusxaxhorizontalxplanexisxperpendicularxtoxa
sagittalxplane.
D AxsagittalxplanexisxNOTxparallelxtoxthexcoronalxplanexbutxperpendicular.
DIF: Recall REF:x x p.x3 OBJ:x x 1
TOP:x CDA:xGeneralxChairside,xI.xA.xDemonstratexunderstandingxofxbasicxoralxandxdentalxanatomy,xph
ysiology,xandxdevelopment
MSC:x NBDHE,xScientificxBasisxforxDentalxHygienexPractice,x1.1xAnatomy
,3. Whenxaxpatientxisxinxanatomicxposition,xwhatxisxthexsurfacexofxthexpalmsxofxthexhandxc
onsidered?
a. Anterior
b. Lateral
c. Medial
d. Posterior
ANS:x A
Feedback
A Thexpalmsxofxthexhandsxinxanatomicxpositionxarexfacingxtowardxthexfrontxandxarexan
teriorx(orxventral).
B ThexpalmsxofxthexhandsxinxanatomicxpositionxarexNOTxfacingxlateralxorxawayxfrom
xthexmedianxplanexbutxarexfacingxtowardxthexfrontxandxarexanteriorx(orxventral).
C ThexpalmsxofxthexhandsxinxanatomicxpositionxarexNOTxfacingxmedialxorxtowardxth
exmedianxplanexbutxarexfacingxtowardxthexfrontxandxarexanteriorx(orxventral).
D ThexpalmsxofxthexhandsxinxanatomicxpositionxarexNOTxfacingxtowardxthexposterior
xorxbackxofxthexbodyxbutxarexfacingxtowardxthexfrontxandxarexanteriorx(orxventral)
.
DIF: Recall REF:x x p.x3 OBJ:x x 2
TOP:x CDA:xGeneralxChairside,xI.xB.xPreliminaryxPhysicalxExamination
MSC:x NBDHE,xProvisionxofxClinicalxDentalxHygienexServices,x1.0xAssessingxPatientxCharacteristics
4. Whatxisxthexanatomicxrelationshipxofxthexrightxarmxtoxthexleftxleg?
a. Sagittal .
b. Contralateral
c. Ipsilateral
d. Midsagittal
ANS:x B
Feedback
A Thextwoxlegsxarexcontralateralxtoxeachxother.xSagittalxdescribesxaxplanexofxdivisionx
ofxthexbodyxcreatedxbyxanximaginaryxplanexparallelxtoxthexmedianxplane.
B Contralateralxstructuresxarexlocatedxonxthexoppositexsidexofxthexbody,xwhichxisxthexa
natomicxrelationshipxofxthexrightxarmxtoxthexleftxleg.
C Ipsilateralxrefersxtoxstructuresxonxthexsamexsidexofxthexbody;xinxcontrast,xthextwoxlegs
xarexcontralateralxtoxeachxotherxandxthusxarexlocatedxonxthexoppositexsidexof
thexbody.
D Thextwoxlegsxarexcontralateralxtoxeachxother.xMidsagittalxdescribesxaxplanexthatxdiv
idesxthexbodyxintoxrightxandxleftxhalves.
DIF: Comprehension REF:x x p.x3 OBJ:x x 2
TOP:x CDA:xGeneralxChairside,xI.xA.xDemonstratexunderstandingxofxbasicxoralxandxdentalxanatomy,xph
ysiology,xandxdevelopment
MSC:x NBDHE,xScientificxBasisxforxDentalxHygienexPractice,x1.1xAnatomy
5. Whatxisxthexanatomicxrelationshipxofxthexmusclesxtoxthexskin?
, a. Anterior
b. External
c. Deep
d. Superficial
ANS:x C
Feedback
A Musclesxarexdeepxtoxthexskin.
B Musclesxarexdeepxtoxthexskin.
C Musclesxarexlocatedxinward,xawayxfromxthexbodyxsurface,xdeepxtoxthexskin.
D Musclesxarexdeepxtoxthexskin.
DIF: Comprehension REF:x x p.x3 OBJ:x x 2
TOP:x CDA:xGeneralxChairside,xI.xA.xDemonstratexunderstandingxofxbasicxoralxandxdentalxanatomy,xph
ysiology,xandxdevelopment
MSC:x NBDHE,xScientificxBasisxforxDentalxHygienexPractice,x1.1xAnatomy
6. Whatxisxthexanatomicxrelationshipxofxthexshouldersxtoxthexhips?
a. Deep
b. Medial
c. Inferior
d. Superior
ANS:x D
Feedback
A Thexshouldersxarexsu pe rN r xtR
ioU oSthIexN
hiG
psT.xB.COM
B Thexshouldersxarexsuperiorxtoxthexhips.
C Thexshouldersxarexsuperiorxtoxthexhips.
D Thexshouldersxarexsuperiorxtoxorxcloserxtoxthexheadxthanxthexhips.
DIF: Comprehension REF:x x p.x3 OBJ:x x 2
TOP:x CDA:xGeneralxChairside,xI.xA.xDemonstratexunderstandingxofxbasicxoralxandxdentalxanatomy,xph
ysiology,xandxdevelopment
MSC:x NBDHE,xScientificxBasisxforxDentalxHygienexPractice,x1.1xAnatomy
7. Whichxofxthexfollowingxisxmeantxbyxthextermx“ventral”?
a. Backxofxanxareaxofxthexbody
b. Frontxofxanxareaxofxthexbody
c. Innerxsidexofxanxareaxofxthexbody
d. Outerxsidexofxanxareaxofxthexbody
ANS:x B
Feedback
A Thexbackxofxanxareaxofxthexbodyxisxreferredxtoxasxthexposteriorxsurface.
B Thexfrontxofxanxareaxofxthexbodyxisxreferredxtoxasxthexventralxsurface.
C Thexinnerxsidexofxanxareaxofxthexbody,xawayxfromxthexbodyxsurface,xisxreferredxt
oxasxdeep.
D Thexoutsidexofxanxareaxofxthexbody,xtowardxthexsurface,xisxreferredxtoxas
, superficial.
DIF: Recall REF:x x p.x3 OBJ:x x 1
TOP:x CDA:xGeneralxChairside,xI.xA.xDemonstratexunderstandingxofxbasicxoralxandxdentalxanatomy,xph
ysiology,xandxdevelopment
MSC:x NBDHE,xScientificxBasisxforxDentalxHygienexPractice,x1.1xAnatomy
8. Whichxofxthexfollowingxdescribesxaxpatient’sxeyesxwhenxtheyxarexinxanatomicxposition?
a. Closedxtightly
b. Lookingxtowardxthexlateral
c. Lookingxtowardxthexmedial
d. Lookingxstraightxforward
ANS:x D
Feedback
A Thexpatient’sxeyesxinxanatomicxpositionxarexopenxandxlookxforward.
B Thexpatient’sxeyesxinxanatomicxpositionxarexopenxandxlookxforward.
C Thexpatient’sxeyesxinxanatomicxpositionxarexopenxandxlookxforward.
D Thexpatient’sxeyesxinxanatomicxpositionxarexopenxandxlookxforward.
DIF: Recall REF:x x p.x2 OBJ:x x 2
TOP:x CDA:xGeneralxChairside,xI.xB.xPreliminaryxPhysicalxExamination
MSC:x NBDHE,xScientificxBasisxforxDentalxHygienexPractice,x1.1.1xHeadxandxNeckxAnatomy
9. Whatxisxthexanatomicxrelationshipxofxthexmaxillaryxarchxtoxthexmandibularxarch?
a. Deep
b. Inferior .
c. Superior
d. Superficial
ANS:x C
Feedback
A Thexmaxillaryxarchxisxsuperiorxtoxthexmandibularxarch.xDeepxrefersxtoxstructuresxthatx
arexlocatedxawayxfromxthexbodyxsurface.
B Thexmaxillaryxarchxisxsuperiorxtoxthexmandibularxarch.xInferiorxrefersxtoxsurfacesxclos
erxtoxthexfeetxorxthatxfacextowardxthexfeet.
C Thexmaxillaryxarchxisxsuperiorxtoxthexmandibularxarch.
D Thexmaxillaryxarchxisxsuperiorxtoxthexmandibularxarch.xSuperficialxrefersxtoxstructures
xlocatedxtowardxthexsurfacexofxthexbody.
DIF: Comprehension REF:x x p.x3 OBJ:x x 2
TOP:x CDA:xGeneralxChairside,xI.xA.xDemonstratexunderstandingxofxbasicxoralxandxdentalxanatomy,xph
ysiology,xandxdevelopment
MSC:x NBDHE,xScientificxBasisxforxDentalxHygienexPractice,x1.1.1xHeadxandxNeckxAnatomy
10. Whatxisxthexanatomicxrelationshipxofxthexteethxlocatedxinxthexfrontxofxthexmouthxtoxthexteethxl
ocatedxinxthexbackxofxthexmouth?
a. Anterior
b. Medial
, c. Posterior
d. Superficial
ANS:x C
Feedback
A Teethxlocatedxinxthexbackxofxthexmouthxarexconsideredxposterior.xTeethxlocatedxinxth
exfrontxofxthexmouthxarexconsideredxanterior.
B Medialxrefersxtoxstructuresxlocatedxcloserxtoxthexmedianxplane.
C Teethxlocatedxinxthexbackxofxthexmouthxarexconsideredxposteriorxtoxteethxlocatedxi
nxthexfrontxofxthexmouth,xwhichxarexconsideredxanterior.
D Superficialxrefersxtoxstructuresxlocatedxcloserxtoxthexsurfacexofxthexbody.
DIF: Comprehension REF:x x p.x3 OBJ:x x 2
TOP:x CDA:xGeneralxChairside,xI.xA.xDemonstratexunderstandingxofxbasicxoralxandxdentalxanatomy,xph
ysiology,xandxdevelopment
MSC:x NBDHE,xScientificxBasisxforxDentalxHygienexPractice,x1.1.2xDentalxAnatomy
11. Thexinnerxsidexofxthexwallxofxaxhollowxstructurexisxreferredxtoxasxinternal.xInxcontrast,xthexouterxsi
dexofxthexwallxofxaxhollowxstructurexisxexternal.
a. Bothxstatementsxarextrue.
b. Bothxstatementsxarexfalse.
c. Thexfirstxstatementxisxtrue;xthexsecondxisxfalse.
d. Thexfirstxstatementxisxfalse;xthexsecondxisxtrue.
ANS:x A
Feedback NURSINGTB.COM
A Bothxstatementsxarextrue.xThexinnerxsidexofxthexwallxofxaxhollowxstructurexisxreferre
dxtoxasxinternal.xThexouterxsidexofxthexwallxofxaxhollowxstructurexisxexternal.
B Bothxstatementsxarextrue.xThexinnerxsidexofxthexwallxofxaxhollowxstructurexisxreferre
dxtoxasxinternal.xThexouterxsidexofxthexwallxofxaxhollowxstructurexisxexternal.
C Bothxstatementsxarextrue.xThexinnerxsidexofxthexwallxofxaxhollowxstructurexisxreferre
dxtoxasxinternal.xThexouterxsidexofxthexwallxofxaxhollowxstructurexisxexternal.
D Bothxstatementsxarextrue.xThexinnerxsidexofxthexwallxofxaxhollowxstructurexisxreferre
dxtoxasxinternal.xThexouterxsidexofxthexwallxofxaxhollowxstructurexisxexternal.
DIF: Recall REF:x x p.x3 OBJ:x x 1
TOP:x CDA:xGeneralxChairside,xI.xA.xDemonstratexunderstandingxofxbasicxoralxandxdentalxanatomy,xphysi
ology,xandxdevelopment
MSC:x NBDHE,xScientificxBasisxforxDentalxHygienexPractice,x1.1xAnatomy
12. Whatxisxanotherxtermxforxaxtransversexsection?
a. Verticalxsection
b. Horizontalxsection
c. Anteriorxsection
, d. Posteriorxsection
ANS:x B
Feedback
A Thextransversexsectionxorxhorizontalxsectionxisxaxdivisionxthroughxaxhorizontalxplane.
B Thextransversexsectionxorxhorizontalxsectionxisxaxdivisionxthroughxaxhorizontalxplane.
C Thextransversexsectionxorxhorizontalxsectionxisxaxdivisionxthroughxaxhorizontalxplane.
D Thextransversexsectionxorxhorizontalxsectionxisxaxdivisionxthroughxaxhorizontalxplane.
DIF: Recall REF:x x p.x3 OBJ:x x 1
TOP:x CDA:xGeneralxChairside,xI.xA.xDemonstratexunderstandingxofxbasicxoralxandxdentalxanatomy,xph
ysiology,xandxdevelopment
MSC:x NBDHE,xScientificxBasisxforxDentalxHygienexPractice,x1.1xAnatomy
13. Anxareaxcloserxtoxthexmedianxplanexisxconsideredxtoxbexdistal,xandxanxareaxfartherxfromxth
exmedianxplanexisxconsideredxproximal.
a. Bothxstatementsxarextrue.
b. Bothxstatementsxarexfalse.
c. Thexfirstxstatementxisxtrue;xthexsecondxisxfalse.
d. Thexfirstxstatementxisxfalse;xthexsecondxisxtrue.
ANS:x B
.
Feedback
A Bothxstatementsxarexfalse.xAnxareaxcloserxtoxthexmedianxplanexisxconsideredxtoxbexp
roximal,xandxanxareaxfartherxfromxthexmedianxplanexisxconsideredxdistal.
B Bothxstatementsxarexfalse.xAnxareaxcloserxtoxthexmedianxplanexisxconsideredxtoxbexp
roximal,xandxanxareaxfartherxfromxthexmedianxplanexisxconsideredxdistal.
C Bothxstatementsxarexfalse.xAnxareaxcloserxtoxthexmedianxplanexisxconsideredxtoxbexp
roximal,xandxanxareaxfartherxfromxthexmedianxplanexisxconsideredxdistal.
D Bothxstatementsxarexfalse.xAnxareaxcloserxtoxthexmedianxplanexisxconsideredxtoxbexp
roximal,xandxanxareaxfartherxfromxthexmedianxplanexisxconsideredxdistal.
DIF: Recall REF:x x p.x3 OBJ:x x 1
TOP:x CDA:xGeneralxChairside,xI.xA.xDemonstratexunderstandingxofxbasicxoralxandxdentalxanatomy,xph
ysiology,xandxdevelopment
MSC:x NBDHE,xScientificxBasisxforxDentalxHygienexPractice,x1.1xAnatomy
14. Structuresxonxthexsamexsidexofxthexbodyxarexconsideredxipsilateral.xStructuresxonxthexoppositexs
idexofxthexbodyxarexconsideredxcontralateral.
a. Bothxstatementsxarextrue.
b. Bothxstatementsxarexfalse.
c. Thexfirstxstatementxisxtrue;xthexsecondxisxfalse.
d. Thexfirstxstatementxisxfalse;xthexsecondxisxtrue.
ANS:x A
, Feedback
A Bothxstatementsxarextrue.xStructuresxonxthexsamexsidexofxthexbodyxarexconsidered
ipsilateral.xStructuresxonxthexoppositexsidexofxthexbodyxarexconsideredxcontralater
al.
B Bothxstatementsxarextrue.xStructuresxonxthexsamexsidexofxthexbodyxarexconsideredxi
psilateral.xStructuresxonxthexoppositexsidexofxthexbodyxarexconsideredxcontralater
al.
C Bothxstatementsxarextrue.xStructuresxonxthexsamexsidexofxthexbodyxarexconsideredxi
psilateral.xStructuresxonxthexoppositexsidexofxthexbodyxarexconsideredxcontralater
al.
D Bothxstatementsxarextrue.xStructuresxonxthexsamexsidexofxthexbodyxarexconsideredxi
psilateral.xStructuresxonxthexoppositexsidexofxthexbodyxarexconsideredxcontralater
al.
DIF: Recall REF:x x p.x3 OBJ:x x 1
TOP:x CDA:xGeneralxChairside,xI.xA.xDemonstratexunderstandingxofxbasicxoralxandxdentalxanatomy,xphysi
ology,xandxdevelopment
MSC:x NBDHE,xScientificxBasisxforxDentalxHygienexPractice,x1.1xAnatomy
15. ThexnumberxofxbonesxandxmusclesxinxthexheadxandxneckxisxNOTxusuallyxconstant,xandxspecificxde
tailsxofxthesexstructuresxcanxvaryxfromxpatientxtoxpatient.
a. Bothxstatementsxarextrue.
b. Bothxstatementsxarexfalse.
c. Thexfirstxstatementxisxtrue;xthexsecondxisxfalse.
d. Thexfirstxstatementxisxfalse;xthexsecondxisxtrue.
ANS:x D
.
Feedback
A Thexfirstxstatementxisxfalse;xthexsecondxisxtrue.xThexnumberxofxbonesxandxmusclesxinxt
hexheadxandxneckxisxusuallyxconstant,xbutxspecificxdetailsxofxthesexstructuresxcanxva
ryxfromxpatientxtoxpatient.
B Thexfirstxstatementxisxfalse;xthexsecondxisxtrue.xThexnumberxofxbonesxandxmusclesxinxt
hexheadxandxneckxisxusuallyxconstant,xbutxspecificxdetailsxofxthesexstructuresxcanxva
ryxfromxpatientxtoxpatient.
C Thexfirstxstatementxisxfalse;xthexsecondxisxtrue.xThexnumberxofxbonesxandxmusclesxinxt
hexheadxandxneckxisxusuallyxconstant,xbutxspecificxdetailsxofxthesexstructuresxcanxva
ryxfromxpatientxtoxpatient.
D Thexfirstxstatementxisxfalse;xthexsecondxisxtrue.xThexnumberxofxbonesxandxmuscles
inxthexheadxandxneckxisxusuallyxconstant,xbutxspecificxdetailsxofxthesexstructuresxcan
xvaryxfromxpatientxtoxpatient.
DIF: Comprehension REF:x p.x3
OBJ:x 3xTOP:x CDA:xGeneralxChairside,xI.xB.xPreliminaryxPhysicalxEx
amination
MSC:x NBDHE,xProvisionxofxClinicalxDentalxHygienexServices,x1.0xAssessingxPatientxCharacteristics
16. Thexmedianxplanexisxcreatedxbyxanximaginaryxlinexdividingxthexbodyxintoxequalxrightxandxleftx
halves.xOnxthexsurfacexofxthexbody,xthesexhalvesxarexNEVERxsymmetricxinxstructure.
a. Bothxstatementsxarextrue.
, b. Bothxstatementsxarexfalse.
c. Thexfirstxstatementxisxtrue;xthexsecondxisxfalse.
d. Thexfirstxstatementxisxfalse;xthexsecondxisxtrue.
ANS:x C
Feedback
A Thexfirstxstatementxisxtrue;xthexsecondxisxfalse.xThexmedianxplanexorxmidsagittalxplan
exisxcreatedxbyxanximaginaryxlinexdividingxthexbodyxintoxequalxrightxandxleftxhalves.
xOnxthexsurfacexofxthexbody,xthesexhalvesxarexgenerallyxsymmetricxinxstructure,xyetxt
hexsamexsymmetryxdoesxNOTxapplyxtoxallxinternalxstructures.
B Thexfirstxstatementxisxtrue;xthexsecondxisxfalse.xThexmedianxplanexorxmidsagittalxplan
exisxcreatedxbyxanximaginaryxlinexdividingxthexbodyxintoxequalxrightxandxleftxhalves.
xOnxthexsurfacexofxthexbody,xthesexhalvesxarexgenerallyxsymmetricxinxstructure,xyetxt
hexsamexsymmetryxdoesxNOTxapplyxtoxallxinternalxstructures.
C Thexfirstxstatementxisxtrue;xthexsecondxisxfalse.xThexmedianxplanexorxmidsagittalxplan
exisxcreatedxbyxanximaginaryxlinexdividingxthexbodyxintoxequalxrightxandxleft
halves.xOnxthexsurfacexofxthexbody,xthesexhalvesxarexgenerallyxsymmetricxinxstructur
e,xyetxthexsamexsymmetryxdoesxNOTxapplyxtoxallxinternalxstructures.
D Thexfirstxstatementxisxtrue;xthexsecondxisxfalse.xThexmedianxplanexorxmidsagittalxplan
exisxcreatedxbyxanximaginaryxlinexdividingxthexbodyxintoxequalxrightxandxleftxhalves.
xOnxthexsurfacexofxthexbody,xthesexhalvesxarexgenerallyxsymmetricxinxstructure,xyetxt
hexsamexsymmetryxdoesxNOTxapplyxtoxallxinternalxstructures.
DIF: Recall REF:x x p.x3 OBJ:x x 2
TOP:x CDA:xGeneralxChairside,xI.xA.xDemonstratexunderstandingxofxbasicxoralxandxdentalxanatomy,
physiology,xandxdevelopment .
MSC:x NBDHE,xScientificxBasisxforxDentalxHygienexPractice,x1.1xAnatomy
17. Anxareaxcloserxtoxthexmedianxplanexofxthexbodyxorxstructurexisxconsideredxlateral.xAnxarea
xfartherxfromxthexmedianxplanexofxthexbodyxorxstructurexisxconsideredxproximal.
a. Bothxstatementsxarextrue.
b. Bothxstatementsxarexfalse.
c. Thexfirstxstatementxisxtrue;xthexsecondxisxfalse.
d. Thexfirstxstatementxisxfalse;xthexsecondxisxtrue.
ANS:x B
Feedback
A Bothxstatementsxarexfalse.xAnxareaxcloserxtoxthexmedianxplanexofxthexbodyxorxstru
cturexisxconsideredxmedial.xAnxareaxfartherxfromxthexmedianxplanexofxthexbodyxo
rxstructurexisxconsideredxlateral,xandxanxareaxcloserxtoxthexmedianxplanexis
consideredxtoxbexproximal.
B Bothxstatementsxarexfalse.xAnxareaxcloserxtoxthexmedianxplanexofxthexbodyxorxstru
cturexisxconsideredxmedial.xAnxareaxfartherxfromxthexmedianxplanexofxthexbodyxo
rxstructurexisxconsideredxlateral,xandxanxareaxcloserxtoxthexmedianxplanexisxconsid
eredxtoxbexproximal.xWithinxthexdentition,xthexproximalxsurfacexwouldxbexconside
redxmesial.
C Bothxstatementsxarexfalse.xAnxareaxcloserxtoxthexmedianxplanexofxthexbodyxorxstruct
urexisxconsideredxmedial.xAnxareaxfartherxfromxthexmedianxplanexofxthe