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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) R215,77   Add to cart
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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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Document information

  • October 15, 2024
  • 105
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

Subjects

  • arteriovenous anastomoses
  • aneurysm
  • bsc2086 bsc 2086 latestbsc2086 bsc
  • exam 3 bsc2086 bsc 2086 anatomy and physiology i
  • bsc2086bsc 2086bsc2086 bsc 2086 final exam
  • bsc2086bsc 2086bsc2086 bsc 2086 exam

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  • BSC2086/ BSC 2086
  • BSC2086/ BSC 2086

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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

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