Examl1:lBIOS255/lBIOSl255l(Newl2025/l2026l
Update)lAnatomylandlPhysiologylIIIlReview|l
Qsl&lAs|lGradelA|l100%lCorrectl(Verified
lAnswers)-lChamberlain
QUESTION
semilunarlvalves
Answer:
controllflowlfromlventricleslintolgreatlarteries
QUESTION
pulmonarylvalve
Answer:
openinglbetweenlrightlventriclelandlpulmonaryltrunk
QUESTION
aorticlsemilunarlvalve
Answer:
inlopeninglbetweenlleftlventriclelandlaorta
QUESTION
,SAlnode
Answer:
pacemakerlinlrightlatrium,linitiateslheartbeat
QUESTION
AVlnode
Answer:
nearlthelrightlAVlvalvelatllowerlendloflseptum,lspreadslsignalltolthelventricles
QUESTION
bundleloflHis
Answer:
carrieslsignallawaylfromlthelAVlnode,lforkslsintolrightlandlleftlbundlelbranches
QUESTION
purkinjelfibers
Answer:
spreadlsignallthroughlventricles
QUESTION
, IflSAlnodelfails...
Answer:
AVlwillltakelover
QUESTION
phasel0
Answer:
Depolarization.lNa+lrapidlylenterslcell.lChargelgetslmorel+.lHappenslverylfast.
QUESTION
phasel1
Answer:
cellslstartltolrepolarizelbutlonlylforlalbrieflperiod
QUESTION
phasel2
Answer:
plateaulphase,lcelllremainsldepolarized,lforl200-
250ms,ldueltolthelinfluxloflcalcium
Update)lAnatomylandlPhysiologylIIIlReview|l
Qsl&lAs|lGradelA|l100%lCorrectl(Verified
lAnswers)-lChamberlain
QUESTION
semilunarlvalves
Answer:
controllflowlfromlventricleslintolgreatlarteries
QUESTION
pulmonarylvalve
Answer:
openinglbetweenlrightlventriclelandlpulmonaryltrunk
QUESTION
aorticlsemilunarlvalve
Answer:
inlopeninglbetweenlleftlventriclelandlaorta
QUESTION
,SAlnode
Answer:
pacemakerlinlrightlatrium,linitiateslheartbeat
QUESTION
AVlnode
Answer:
nearlthelrightlAVlvalvelatllowerlendloflseptum,lspreadslsignalltolthelventricles
QUESTION
bundleloflHis
Answer:
carrieslsignallawaylfromlthelAVlnode,lforkslsintolrightlandlleftlbundlelbranches
QUESTION
purkinjelfibers
Answer:
spreadlsignallthroughlventricles
QUESTION
, IflSAlnodelfails...
Answer:
AVlwillltakelover
QUESTION
phasel0
Answer:
Depolarization.lNa+lrapidlylenterslcell.lChargelgetslmorel+.lHappenslverylfast.
QUESTION
phasel1
Answer:
cellslstartltolrepolarizelbutlonlylforlalbrieflperiod
QUESTION
phasel2
Answer:
plateaulphase,lcelllremainsldepolarized,lforl200-
250ms,ldueltolthelinfluxloflcalcium