Examl 2:l BIOl 202/l BIO202l (Latestl 2025/l
2026l Update)l Humanl Anatomyl andl Physiologyl IIl Guide|l Questionsl &l Answers|l Gradel A|l 100%l Correctl (Verifiedl Solutions)-l GCU
Q:l "Valvel opensl backwards,l bloodl canl thenl regurgitate,l causesl backflowl ofl bloodl acrossl thel valve"?
Answer:
Prolapse
Q:l "Narrowedl valve,l bloodl can'tl movel asl welll inl thel forwardl directionl acrossl thel valve"?
Answer:
Stenosis
Q:l Thel bloodl goingl throughl thel heartl isl ofl nol valuel tol thel heartl inl termsl ofl oxygenl deliveryl tol thel ofl myocardiuml (1l remember)
Answer:
(1l remember)
Q:l "partiall obstructionl ofl coronaryl bloodl flowl canl causel chestl pain,l painl causedl byl ischemia,l oftenl activityl dependent"?
Answer:
Anginal Pectoris
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Q:l "Completel obstructionl causesl deathl ofl cardiacl cellsl inl affectedl area,l painl orl pressurel inl chestl thatl oftenl radiatesl downl leftl arm"?
Answer:
Myocardiall Infraction
Q:l "Vesselsl thatl havel abnormall bloodl flowl whichl causesl overl dilationl andl swollenl ofl vessels"?
Answer:
Varicosel veins
Q:l "Vesselsl thatl havel narrowedl byl fibro-lipidl plaque"?
Answer:
Coronaryl Arteryl Occlusion
Q:l "Heartbeatl originatesl withinl heartl onl itsl musclel ofl itsl own"?
Answer:
Myogenic
Q:l "Regular,l spontaneousl depolarization"?
Answer:
Autorhythmic
Q:l Whatl isl thel propertiesl ofl thel cardiacl conductionl system?
Answer:
Myogenicl andl autorhythmic
Q:l Whatl isl thel componentsl ofl thel cardiacl conductionl system?
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Answer:
SAl node,l Avl node,l AVl bundle,l Left/Rightl bundlel branches,l andl Purkinjel fibers
Q:l "Pacemaker,l initiatesl heartbeat,l setsl heartl rate"?
Answer:
SAl node
Q:l "electricall gatewayl tol ventriclesl (briefl delayl sol atrial couldl contractl beforel ventricles)"?
Answer:
AVl node
Q:l "Pathwayl forl signalsl froml AVl node"?
Answer:
AVl bundlel (Bundlel ofl His)
Q:l "Divisionsl ofl AVl bundlel thatl enterl interventricularl septum"?
Answer:
Rightl andl Leftl bundlel branches
Q:l "upwardl froml apexl spreadl throughoutl ventricularl myocardiuml inl orderl tol maximizel ventricularl ejection"?
Answer:
Purkinjel fibbers
Q:l "(-90l mvl restingl potential),l Veryl brief,l stimulusl opensl voltagel regulatedl Nal gatesl (rushl in)l membranel depolarizesl rapidly,l peaksl atl +30l mv,l Nal gatesl closel quickly"?
Answer:
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