, Case Files™ n
Anatomy
Secondn Edition
EUGENE C.TOY, MD
n n n
Then Johnn S.nDunn,nSeniornAcademicn Chiefn andn Program n Dir
ector
Then Methodistn Hospital-Houston
ObstetricsnandnGynecology nResidencyn Program n
Houston, nTexas
Clerkshipn Di rector,n Clini caln A ssoci aten Professorn Dep
artmentn ofn Obstetricsn andn Gynecolog yn Universit
ynofnTexasnMedicalnSchoolnatnHoustonn Houston,nTe
xas
LAWRENCE M. ROSS, MD, PHD
n n n n
Adjunctn Professor
DepartmentnofnNeurobiologynandnAnatomynUni
versitynofnTexasnMedicalnSchoolnat nHouston n Houst
on, nTexas
LEONARD J. CLEARY, PHD
n n n
Seniorn Lecturer
Departmentn ofn Neurobiologyn andn Anatomyn Cours
enDirector, nGrossnAnatomy
UniversitynofnTexasnMedicaln Schoolnat nHoustonn H o
uston,nT exas
CRISTO PAPASAKELARIOU, MD, FACOG
n n n
Clinicaln Professor,
Departmentn ofn Obstetricsn andn Gynecologyn Uni
versityn ofnTexasn Medicaln Branchn Galveston, nT e
xas
Clinicaln Directorn ofn Gynecologicn Surgeryn St
.nJosephn MedicalnCenter
Houston,nTexas
NewnYorkn Chicago n San nFranciscon
Lisbon n Londonn Madridn MexiconCity n
Milan n NewnDelhin San nJuann Seouln Sin
gapore n Sydney n Toronto
,Copyright n©n2008n byn Then McGraw-
Hilln Companies,nInc.n Alln rightsn reserved.n Manufactured n inn then United n Statesn ofn America.n Except nasn
permittednundern then United n Statesn Copyrightn Act nof n1976,n non part n of n thisn publication n mayn ben repro
duced n orn distributedn in n any n form n orn by n any n means,n orn storedn innandatabasenorn retrievaln system,n wit
hout n then priorn written n permission n of n then publisher.
0-07-164313-3
Then materialn in n thisn eBook n also n appearsn in n then print n version n of n thisn title: n 0-07-148980-0.
Alln trademarksn aren trademarksn ofn theirn respectiven owners.n Rathern thann putn an trademark n symb
olnafterneveryn occurrencenofnantrademarked nname,n wenusennamesn in nann editorialnfashionn only,nandn ton
thenbenefitn ofn then trademark nowner,n with nno n intentionn ofn infringementnof nthentrademark.n Wherensuch
n designationsn appearn in n thisn book,n they n have n been n printed n with n initialn caps.
McGraw-
Hilln eBooksnarenavailablenat n specialn quantityndiscountsn to nusenasnpremiumsnandn salesn promotions,n or
n forn usen inn corporaten trainingn programs.n Forn moren information,n pleasen contactn George nHoare,n
Specialn Sales,n atn n orn (212)n 904-4069.
TERMSn OFn USE
Thisn isnancopyrightedn worknandn Then McGraw-Hilln Companies,nInc.n (“McGraw-Hill”)nandn itsn licen-
n sorsn reservenalln rightsn innandn ton then work.n Use nof nthisn work n isn subject nto nthesen terms.n Exceptnasn per-
nmittednundern then Copyright n Actn ofn 1976nand nthen right nton storenand n retrieve nonen copynofn then work,n y
ounmaynnot ndecompile,ndisassemble,n reversenengineer,n reproduce,nmodify,n createnderivativen worksnb
asednupon,ntransmit,ndistribute,ndisseminate,n sell,n publishn orn sublicensen then workn ornanynpartnofn itn wit
houtnMcGraw-
Hill’sn priorn consent.n You nmaynusenthen worknforn yournownnnoncommercialnand npersonalnuse; nanyn oth
ern usen ofn then workn isn strictly nprohibited.n Yourn rightn ton usen then work nmaynben terminated n if nyounfailn ton
comply n with n thesen terms.
THEn WORKnISn PROVIDEDn “ASnIS.”nMcGRAW-
HILLn ANDnITSn LICENSORSnMAKEn NOn GUARANTEESn ORn WARRANTIESn ASn TOn THEn ACC
URACY,n ADEQUACYn ORnCOMPLETE-
n NESSn OFn ORn RESULTSn TOnBEn OBTAINEDn FROM n USINGnTHEnWORK,nINCLUDINGn ANYnI
NFORMATIONn THATnCANnBEn ACCESSEDnTHROUGHn THEn WORKn VIAnHYPERLINKn ORn
OTHERWISE,n ANDnEXPRESSLYn DISCLAIM n ANYn WARRANTY,EXPRESSn ORnIMPLIED,nIN
CLUDINGn BUTn NOTn LIMITEDn TOn IMPLIEDn WARRANTIESn OFn MERCHANTABILITY
ORn FITNESSn FORn An PARTICULARn PURPOSE.n McGraw-
Hilln andn itsn licensorsn don notn warrantn orn guaranteenthatn thenfunctionsn containedn inn then workn willn me
etn yourn requirementsnorn that n itsnoperationn willn benuninterruptedn orn errornfree.n NeithernMcGraw-
Hilln norn itsn licensorsn shalln ben liablen to nyounornanyonenelsenfornanyn inaccuracy,nerrornornomission,n re
gardlessnof ncause,n in nthen work nornfornanyn damagesn resultingntherefrom.n McGraw-
Hilln hasn non responsibility nfornthencontentn ofnany n informationnaccessed nthroughn then work.n Undernno nc
ircumstancesn shallnMcGraw-
Hilln and/orn itsn licensorsn ben liablenfornanyn indirect,n incidental,n special,n punitive,n consequentialn orn sim
ilarn damagesnthatn result nfrom nthenusenof norn inability n ton usenthen work,n evenn ifnanynof nthemn hasnbeenna
dvisedn ofn thenpossibilityn ofn such ndamages.nThisn limitationnofn liability n shallnapplyn to nanyn claim norncau
sen whatsoevern whethern such n claim n orn causen arisesn in n contract,n tort n orn otherwise.
DOI: n 10.1036/0071489800
, Professional
Want to learn more?
n n n
We hope you enjoy this
n n n n n
McGraw-Hill eBook! If n n
you’d like more information about this book, its
n n n n n n n n
author, or related books and websites, please cli
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n
Anatomy
Secondn Edition
EUGENE C.TOY, MD
n n n
Then Johnn S.nDunn,nSeniornAcademicn Chiefn andn Program n Dir
ector
Then Methodistn Hospital-Houston
ObstetricsnandnGynecology nResidencyn Program n
Houston, nTexas
Clerkshipn Di rector,n Clini caln A ssoci aten Professorn Dep
artmentn ofn Obstetricsn andn Gynecolog yn Universit
ynofnTexasnMedicalnSchoolnatnHoustonn Houston,nTe
xas
LAWRENCE M. ROSS, MD, PHD
n n n n
Adjunctn Professor
DepartmentnofnNeurobiologynandnAnatomynUni
versitynofnTexasnMedicalnSchoolnat nHouston n Houst
on, nTexas
LEONARD J. CLEARY, PHD
n n n
Seniorn Lecturer
Departmentn ofn Neurobiologyn andn Anatomyn Cours
enDirector, nGrossnAnatomy
UniversitynofnTexasnMedicaln Schoolnat nHoustonn H o
uston,nT exas
CRISTO PAPASAKELARIOU, MD, FACOG
n n n
Clinicaln Professor,
Departmentn ofn Obstetricsn andn Gynecologyn Uni
versityn ofnTexasn Medicaln Branchn Galveston, nT e
xas
Clinicaln Directorn ofn Gynecologicn Surgeryn St
.nJosephn MedicalnCenter
Houston,nTexas
NewnYorkn Chicago n San nFranciscon
Lisbon n Londonn Madridn MexiconCity n
Milan n NewnDelhin San nJuann Seouln Sin
gapore n Sydney n Toronto
,Copyright n©n2008n byn Then McGraw-
Hilln Companies,nInc.n Alln rightsn reserved.n Manufactured n inn then United n Statesn ofn America.n Except nasn
permittednundern then United n Statesn Copyrightn Act nof n1976,n non part n of n thisn publication n mayn ben repro
duced n orn distributedn in n any n form n orn by n any n means,n orn storedn innandatabasenorn retrievaln system,n wit
hout n then priorn written n permission n of n then publisher.
0-07-164313-3
Then materialn in n thisn eBook n also n appearsn in n then print n version n of n thisn title: n 0-07-148980-0.
Alln trademarksn aren trademarksn ofn theirn respectiven owners.n Rathern thann putn an trademark n symb
olnafterneveryn occurrencenofnantrademarked nname,n wenusennamesn in nann editorialnfashionn only,nandn ton
thenbenefitn ofn then trademark nowner,n with nno n intentionn ofn infringementnof nthentrademark.n Wherensuch
n designationsn appearn in n thisn book,n they n have n been n printed n with n initialn caps.
McGraw-
Hilln eBooksnarenavailablenat n specialn quantityndiscountsn to nusenasnpremiumsnandn salesn promotions,n or
n forn usen inn corporaten trainingn programs.n Forn moren information,n pleasen contactn George nHoare,n
Specialn Sales,n atn n orn (212)n 904-4069.
TERMSn OFn USE
Thisn isnancopyrightedn worknandn Then McGraw-Hilln Companies,nInc.n (“McGraw-Hill”)nandn itsn licen-
n sorsn reservenalln rightsn innandn ton then work.n Use nof nthisn work n isn subject nto nthesen terms.n Exceptnasn per-
nmittednundern then Copyright n Actn ofn 1976nand nthen right nton storenand n retrieve nonen copynofn then work,n y
ounmaynnot ndecompile,ndisassemble,n reversenengineer,n reproduce,nmodify,n createnderivativen worksnb
asednupon,ntransmit,ndistribute,ndisseminate,n sell,n publishn orn sublicensen then workn ornanynpartnofn itn wit
houtnMcGraw-
Hill’sn priorn consent.n You nmaynusenthen worknforn yournownnnoncommercialnand npersonalnuse; nanyn oth
ern usen ofn then workn isn strictly nprohibited.n Yourn rightn ton usen then work nmaynben terminated n if nyounfailn ton
comply n with n thesen terms.
THEn WORKnISn PROVIDEDn “ASnIS.”nMcGRAW-
HILLn ANDnITSn LICENSORSnMAKEn NOn GUARANTEESn ORn WARRANTIESn ASn TOn THEn ACC
URACY,n ADEQUACYn ORnCOMPLETE-
n NESSn OFn ORn RESULTSn TOnBEn OBTAINEDn FROM n USINGnTHEnWORK,nINCLUDINGn ANYnI
NFORMATIONn THATnCANnBEn ACCESSEDnTHROUGHn THEn WORKn VIAnHYPERLINKn ORn
OTHERWISE,n ANDnEXPRESSLYn DISCLAIM n ANYn WARRANTY,EXPRESSn ORnIMPLIED,nIN
CLUDINGn BUTn NOTn LIMITEDn TOn IMPLIEDn WARRANTIESn OFn MERCHANTABILITY
ORn FITNESSn FORn An PARTICULARn PURPOSE.n McGraw-
Hilln andn itsn licensorsn don notn warrantn orn guaranteenthatn thenfunctionsn containedn inn then workn willn me
etn yourn requirementsnorn that n itsnoperationn willn benuninterruptedn orn errornfree.n NeithernMcGraw-
Hilln norn itsn licensorsn shalln ben liablen to nyounornanyonenelsenfornanyn inaccuracy,nerrornornomission,n re
gardlessnof ncause,n in nthen work nornfornanyn damagesn resultingntherefrom.n McGraw-
Hilln hasn non responsibility nfornthencontentn ofnany n informationnaccessed nthroughn then work.n Undernno nc
ircumstancesn shallnMcGraw-
Hilln and/orn itsn licensorsn ben liablenfornanyn indirect,n incidental,n special,n punitive,n consequentialn orn sim
ilarn damagesnthatn result nfrom nthenusenof norn inability n ton usenthen work,n evenn ifnanynof nthemn hasnbeenna
dvisedn ofn thenpossibilityn ofn such ndamages.nThisn limitationnofn liability n shallnapplyn to nanyn claim norncau
sen whatsoevern whethern such n claim n orn causen arisesn in n contract,n tort n orn otherwise.
DOI: n 10.1036/0071489800
, Professional
Want to learn more?
n n n
We hope you enjoy this
n n n n n
McGraw-Hill eBook! If n n
you’d like more information about this book, its
n n n n n n n n
author, or related books and websites, please cli
n n n n n n n
ck here.
n
