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Exam 3: BSC2086/ BSC 2086 (Latest 2024/ 2025 Update) Anatomy and Physiology II Complete Guide | Qs & As| 100% Correct| Grade A (Verified Answers)
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Exam 3: BSC2086/ BSC 2086 (Latest 2024/ 2025 Update) Anatomy and Physiology II Complete Guide | Qs & As| 100% Correct| Grade A (Verified Answers)
Q: Aneurysm
Answer:
•A bulge in an arterial wall
•Is caused by weak spot in elastic fibers
•Pressure may rupture vessel if elastic compo...
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Publié le
15 octobre 2024
Nombre de pages
105
Écrit en
2024/2025
Type
Examen
Contient
Questions et réponses
arteriovenous anastomoses
aneurysm
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exam 3 bsc2086 bsc 2086 anatomy and physiology i
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Exam 3,Exam 4 & Final Exams: BSC2086/ BSC 2086 (Latest 2024/ 2025 Updates STUDY BUNDLE PACKAGE WITH SOLUTIONS) Anatomy and Physiology II | Qs & As| 100% Correct| Grade A (Verified Answers)
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1. Examen - Exam 4: bsc2086/ bsc 2086 (latest 2024/ 2025 update) anatomy and physiology ii comple...
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Examl3:lBSC2086/lBSCl2086lAnatomylandl
PhysiologylIIlCompletelGuidel|lQsl&lAs|l
100%lCorrect|lGradelAl(VerifiedlAnswers)
Q:lAneurysm
Answer:
•Albulgelinlanlarteriallwall
•Islcausedlbylweaklspotlinlelasticlfibers
•Pressurelmaylrupturelvesselliflelasticlcomponentlfails
Q:lStroke
Answer:
aneurysmlinlbrain
Q:lCapillarieslare...
Answer:
•Smallestlvesselslwithlthinlwalls
•Microscopiclcapillarylnetworkslpermeatelalllactiveltissues
Q:lCapillarylfunction
Answer:
•Locationloflalllexchangelfunctionsloflcardiovascularlsystem
•Materialsldiffuselbetweenlbloodlandlinterstitiallfluidl(remember,linterstitiallfluidlislextracellula
rlfluidlfoundlsurroundinglthelcellslofltissues)
Q:lCapillarylStructure
Answer:
•Endothelialltube,linsidelthinlbasementlmembranel(foundlonltheloutsideloflthelcapillary)
•Diameterlislsimilarltolredlbloodlcell
•Noltunicalmedia
•Noltunicalexterna
,Q:lContinuouslCapillaries
Answer:
•Havelcompletelendothelialllining
•Arelfoundlinlallltissueslexceptlepithelialandlcartilage
Remember,lthoseltissueslhavelpoorlvasculature
Q:lFunctionsloflcontinuouslcapillaries
Answer:
•Permitldiffusionloflwater,lsmalllsolutes,landllipid-solublelmaterials
•Blocklbloodlcellslandlplasmalproteinslfromlleavinglthelcapillary
•SpecializedlcontinuouslcapillarieslinlCNSlhavelverylstrictlpermeabilityl(responsiblelforlthelblo
odlbrainlbarrier)
Q:lFenestratedlCapillaries
Answer:
•Havelporeslinlendothelialllining
•Permitlrapidlexchangeloflwaterlandllargerlsoluteslbetweenlplasmalandlinterstitiallfluid
Q:lLocationsloflfenestratedlcapillaries
Answer:
•Choroidlplexusloflthelbrain
•Endocrinelorgans
•Kidneys
•Intestinalltract
Q:lSinusoidsl(SinusoidallCapillaries)
Answer:
•Havelgapslbetweenladjacentlendotheliallcells
•Permitlfreelexchangeloflwaterlandllargelplasmalproteinslbetweenlbloodlandlinterstitiallfluid
•Phagocyticlcellslmonitorlbloodlatlsinusoids
•EngulfsldamagedlRBC's,lpathogens,landlcellularldebris
Q:lLocationloflsinusoids
Answer:
•Liverl-lproducelplasmalproteinslthatlenterlbloodstream
,•Spleenl-lbloodlcelllremoval
•Bonelmarrowl-lbloodlcells
•Endocrinelorgansl-lhormones
Q:lCapillarylBedsl(CapillarylPlexus)
Answer:
Connectlonelarteriolelandlonelvenule;lhavelprecapillarylsphincters
Q:lPrecapillarylsphincter
Answer:
•Smoothlmusclelcells
•Guardslentranceltoleachlcapillary
•Openslandlcloses,lcausinglcapillarylbloodltolflowlinlpulses;lrouteslbloodltolonelcapillarylbedlo
rlanother
Q:lThoroughfarelChannels
Answer:
•Directlcapillarylconnectionslbetweenlarterioleslandlvenules
•Controlledlbylsmoothlmusclelsegments
Q:lCollaterals
Answer:
•Multiplelarterieslthatlcontributeltolonelcapillarylbed
•Allowlcirculationliflonelarterylislblocked
Q:lArteriallanastomosis
Answer:
Fusionlofltwolcollaterallarteries
Q:lArteriovenouslanastomoses
Answer:
•Directlconnectionslbetweenlarterioleslandlvenules
•Bypasslthelcapillarylbedlwhenlanastomosislisldilated!l(easierltolgolhere
thanlthroughlthe
capillarylbedl[small
, diameterlmeanslgreaterlresistance])
•Regulatedlbylsympatheticlinputlfromlcardiovascularlcenterloflmedullaloblongata
Q:lAngiogenesis
Answer:
•Formationloflnewlbloodlvessels
•Occurslinlthelembryolasltissueslandlorgansldevelop
•Occurslinlresponseltolfactorslreleasedlbylcellslthatlarelhypoxic,lorloxygen-starved
Q:lVascularlendotheliallgrowthlfactorl(VEGF)
Answer:
stimulateslangiogenesislfromlexistinglvessels
Q:lWherelislangiogenesislmostlimportant?lWhy?
Answer:
Mostlimportantlinlcardiaclmuscle,lwherelitltakeslplacelinlresponseltolalchronicallylconstrictedlo
rloccludedlvessel
Q:lVasomotion
Answer:
•Contractionlandlrelaxationlcycleloflprecapillarylsphincters
•Causeslbloodlflowlinlcapillarylbedsltolconstantlylchangelroutes
•Controlledllocallylbylchanginglconcentrationsloflchemicalslandldissolvedlgaseslinlinterstitiallfl
uidl(autoregulation)
Q:lAutoregulationloflvasomotionlexample
Answer:
Localllowl[O2]latltissuelcauseslprecapillarylsphincterlrelaxation,lallowinglmorelbloodltolflowlt
olthatlarealandlraiselO2llevels.
Q:lVeinslcharacteristics
Answer:
•Collectlbloodlfromlcapillarieslinltissueslandlorgans
•Returnlbloodltolheart
•Arellargerlinldiameterlthanlarteries