BIOS-251 EXAM 2025 QUESTIONS WITH VERIFIED CORRECT ANSWERS

BIOS-251 EXAM 2025 QUESTIONS WITH VERIFIED
CORRECT ANSWERS
Whatw4wwayswdowyouwexaminewthewbody?w-
wCORRECTwANSWERSInspection,wPalpation,wAuscultationwandwPercussion

Inspectionw-wCORRECTwANSWERSSeeingwthewbody
Palpationw-wCORRECTwANSWERStowexaminewbywtouch
Auscultationw-wCORRECTwANSWERSListeningwwithwawstethoscope
Percussionw-
wCORRECTwANSWERStakingwhandswandwbeatingwoverwcertainwpartswofwbody

MedicalwImagingw-
wCORRECTwANSWERSmethodswofwviewingwthewinsidewofwthewbodywwithoutwsurgery, wi.e.wr

adiology
GrosswAnatomyw-
wCORRECTwANSWERSStudywofwstructureswthatwcanwbewseenwwithwthewnakedweye

Histologyw-wCORRECTwANSWERSthewstudywofwthewmicroscopicwstructurewofwtissues
Histopathologyw-
wCORRECTwANSWERSmicroscopicwexaminationwofwtissueswforwsignswofwdisease

Cytologyw-wCORRECTwANSWERSstudywofwstructurewandwfunctionwofwcells
Ultrastructurew-
wCORRECTwANSWERSfinewdetail,wdownwto wthewmolecularwlevel,wrevealedwbywthewelectro

nwmicroscope
SubdisciplineswofwPhysiologyw-
wCORRECTwANSWERSneurophysiology, wendocrinology, wpathophysiology

Neurophysiologyw-wCORRECTwANSWERSphysiologywofwthewnervouswsystem
Endocrinologyw-wCORRECTwANSWERSstudywofwhormones
Pathophysiologyw-wCORRECTwANSWERSmechanismswofwdisease
Hippocratesw-wCORRECTwANSWERSFatherwofwmedicine
ScientificwFactw-wCORRECTwANSWERSinformationwthatwcanwbewindependentlywverified
LawwofwNaturew-
wCORRECTwANSWERSawgeneralizationwaboutwthewpredictablewwayswin wwhich wmatterwand

wenergywbehave

Theoryw-
wCORRECTwANSWERSexplanatorywstatementworwsetwofwstatementswderivedwfromwfacts,wl

awswandwconfirmedwhypotheses
Bipedalismw-wCORRECTwANSWERSthewabilitywtowwalkwuprightwonwtwowlegs
ThewHierarchywofwComplexityw-wCORRECTwANSWERSOrganwsystem-organs-tissues-
cells-organelles-molecules-atoms
situswinvertusw-wCORRECTwANSWERSheartwiswonwthewoppositewside
Organizationw-
wCORRECTwANSWERSlivingwthingswexhibit wawhigherwlevelwofworganizationwthanwnonliving

wthings

CellularwCompositionw-
wCORRECTwANSWERSlivingwmatterwiswalwayswcompartmentalized wintowoneworwmorewcell

s

,Metabolismw-
wCORRECTwANSWERSinternalwchemicalwreactions;wthewsumwofwallwbiochemicalweventswt

hatwoccurwinwthewbody
Responsivenessw-
wCORRECTwANSWERSabilitywto wsensewandwreactwtowstimuliw(irritabilityworwexcitability)

Movementw-
wCORRECTwANSWERSof worganismwand/orwofwsubstanceswwithinwtheworganism

Characteristicswofwlifew-
wCORRECTwANSWERSorganization, wcellularwcomposition,wmetabolism,wresponsivenessw

andwmovement,whomeostasis,wdevelopment,wreproduction,wevolution
Homeostasisw-
wCORRECTwANSWERSthewabilitywtowdetectwchange,wactivatewmechanismswthatwopposewit

wandwtherebywmaintainwstablewinternalwconditions

PhysiologicalwVariationw-
wCORRECTwANSWERSSex,wage, wdiet,wweight,wphysical wactivity, wgeneticswandwenvironm

ent
FeedbackwLoopsw-
wCORRECTwANSWERSbiologicalwmechanismswwherewhomeostasiswiswmaintained

HomeostasiswinwBodywTemperaturew-wCORRECTwANSWERS-
Ifwtoowwarm,wvesselswdilatewinwthewskinwandwsweatingwbeginsw(heat-losingwmechanism)
-Ifwtoowcold,wvesselswinwthewskinwconstrictwandwshiveringwbeginsw(heat-gainingwmechanism)
NegativewFeedbackw-
wCORRECTwANSWERSawmechanismwofwresponsewinwwhich wawstimuluswinitiateswreactions

wthatwreducewthewstimulus

Receptorw-wCORRECTwANSWERSstructurewthatwsenseswchangewinwthewbody
Integratingw(control)wCenterw-
wCORRECTwANSWERScontrolwcenterwthatwprocesseswthewsensorywinformation,w"makeswa

wdecision,"wandwdirectswthewresponse

Effectorw-
wCORRECTwANSWERScellworworgan wthatwcarrieswoutwthewfinalwcorrective wactionwtowrestor

ewhomeostasis
PositivewFeedbackw-wCORRECTwANSWERSSelf-
amplifyingwcyclewwherewthewfeedbackwloopwiswrepeated.wNormalwwaywofwproducingwrapidwc
hanges.wCanwsometimeswbewdangerous.wex.wchildbirth
Gradientw-
wCORRECTwANSWERSawdifferencewinwchemicalwconcentration,wcharge,wtemperature,worw

pressurewbetweenwtwowpoints.wChemicalswflowwdownwconcentrationwgradients.wChargedwp
articleswflowwdownwelectricalwgradients.wHeatwflowswdownwthermalwgradients.
CTwScanw-wCORRECTwANSWERScomputedwtomographywscan
MRIw-wCORRECTwANSWERSmagneticwresonancewimaging
PETwscanw-
wCORRECTwANSWERSawvisualwdisplaywofwbrainwactivitywthatwdetectswwhere wawradioactive

wformwofwglucosewgoeswwhile wthewbrain wperformswawgivenwtask

Sonographyw-
wCORRECTwANSWERShighwfrequencywsoundwwaveswechowbackwfromwinternalworgans

, Thewrelationshipwbetweenwfunctionwandwstructurew-
wCORRECTwANSWERSForm wcreateswfunction,wfunctionwpredictswform

Thewprimarywfunctionwofwredwbloodwcellsw-
wCORRECTwANSWERSTowtransportwvitalwgaseswtowandwfromwthewbodywtissues.wRed wbloo

dwcellswtransportwoxygenwtowthewtissueswandwcarbonwdioxidewfromwthewtissueswtowthewlungsw
sowthatwitwcanwbewexhaledwoutwofwthewbody.
Howwarewredwbloodwcellswunlikewotherwbodywcells?w-
wCORRECTwANSWERSAswtheywmaturewtheywlosewtheirwnucleuswandworganelles,wwhichwal

lowswroomwforwmorewhemoglobinwmoleculeswwhichwarewoxygenwbindingwproteins.
Whatwdowredwbloodwcellswdisplay?w-
wCORRECTwANSWERSViscoelasticity,wtheywhavewthewabilitywtowgo wbackwtowtheirworiginalw

shapewifwtheywbecomewdeformedwduewtowstress.wThiswallowswthemwtowbewablewtowflowwthrou
ghwnarrowwbloodwvessels.
Superiorw-wCORRECTwANSWERSStructurewthatwiswtowardwthewheadwofwthewbody
Howwmanywbodywcavitieswarewinwthewbody?w-wCORRECTwANSWERS4
Ventral/Dorsalw-wCORRECTwANSWERSfrontwandwback
anterior/posteriorw-wCORRECTwANSWERSTowardwthewventralwside
Towardwthewdorsalwside
Cephallicw-wCORRECTwANSWERStowardwthewheadworwsuperiorwend
Rostralw-wCORRECTwANSWERStowardwthewforeheadworwnose
Caudalw-wCORRECTwANSWERStowardwthewtailworwinferiorwend
Inferiorw-wCORRECTwANSWERSbelow
Medial/Lateralw-wCORRECTwANSWERStowardwthewmidline/awaywfromwthewmidline
Proximal/Distalw-
wCORRECTwANSWERScloserwtowpointwofwattachment/fartherwfromwpointwof wattachment

ipsilateral/contralateralw-
wCORRECTwANSWERSonwthewsamewsidewofwthewbody/oppositewsidewofwbody

Superficial/Deepw-
wCORRECTwANSWERScloserwtowbodywsurface/fartherwfromwbodywsurface

Axialw-
wCORRECTwANSWERSRepresentswcorewofwbody,wincludeswallwstructureswexceptwupperwa

ndwlowerwappendages
Appendicularw-wCORRECTwANSWERSupperwandwlowerwlimbs
AxialwRegionw-
wCORRECTwANSWERSCephalic,wCervicalw(neck),wThoracicw(chest),wAbdominalw(belly),w

Pelvicw(hip),wPubicw(groin)
AppendicularwRegionw-
wCORRECTwANSWERSAxillaryw(underarm),wBrachialw(upperwarm),wAntecubitalw(frontwofwe

lbow),wAntebrachialw(forearm),wCarpalw(wrist),wPalmarw(palm),wPollexw(thumb),wDigital/Pha
langealw(fingers),wFemoralw(thigh),wPatellarw(anteriorwsurfacewofwthewknee),wCruralw(leg),wP
edalw(foot)
BodywCavitiesw-
wCORRECTwANSWERSspaceswwithinwthe wbodywthatwcontainwandwprotectwinternalworgans

Thewabdominopelvicwcavitywcanwbewdividedwintowhowwmanywquadrants?w-
wCORRECTwANSWERS4