Examl 3:l NSG121/l NSGl 121l (Latestl 2025/l
2026l Update)l Healthl Assessmentl Review|l
Questionsl &l Answers|l Gradel A|l 100%l
Correctl (Verifiedl Solutions)-l Herzing
Q:l whatl isl thel purposel ofl thel fourl valvesl ofl thel heart
Answer:
Theyl permitl bloodl tol flowl forwardl andl preventl bloodl froml flowingl backwardl duringl
contraction.
Q:l Thel twol atrioventricularl (AV)l valvesl separate
Answer:
atrial froml thel ventricles
Q:l Thel tricuspidl valvel separatesl the
Answer:
rightl atriuml andl rightl ventricle
Q:l mitraLl (bicuspid)l valvel separatesl the
Answer:
leftl atriuml andl leftl ventricle.
,Q:l Thel AVl valvesl arel openl (dilated)l duringl the
Answer:
ventricularl fillingl period—orl diastole
Q:l Thel AVl valvesl closel during
Answer:
ventricularl contraction—orl systole—tol preventl regurgitationl orl backflowl ofl blood.
Q:l Thel twol semilunarl valvesl separate
Answer:
thel ventriclesl froml thel greatl vessels
Q:l Thel valvesl arel namedl after
Answer:
thel vessell thatl theyl fill
Q:l endocardium
Answer:
thinl liningl thel insidel ofl thel heart'sl chambersl andl valves.
,Q:l myocardium
Answer:
Thel thickl muscularl middlel layerl responsiblel forl thel pumpingl actionl ofl thel heart
Q:l epicardium
Answer:
thinl musclel layerl onl thel outsidel ofl thel heart
Q:l pericardium
Answer:
Thel toughl fibrousl enclosesl andl protectsl thel heart.l Itsl twol layersl containl al smalll
amountl ofl pericardiall fluidl forl lubricationl duringl pumping.
Q:l Al smalll electricall impulsel thatl firesl inl the
Answer:
sinoatriall (SA)l nodel inl thel rightl atriuml generatesl thel normall heartbeat.
Q:l thel ratel ofl firingl inl thel SAl nodel determines
Answer:
ventricularl contractionl andl pulsel rate.
, Q:l Bloodl thatl entersl thel rightl sidel ofl thel heartl circulatesl to
Answer:
thel lungs
Q:l bloodl thatl entersl thel leftl sidel circulatesl to
Answer:
thel body
Q:l inl otherl bodyl areasl EXCEPTl forl inl thel heart,l arteriesl carryl whatl kindl ofl blood
Answer:
oxygenated
Q:l inl otherl bodyl areasl EXCEPTl forl inl thel heart,l veinsl carryl whatl kindl ofl blood
Answer:
deoxygenated
Q:l inl thel heart,l arteriesl carry
Answer:
deoxygenatedl blood
2026l Update)l Healthl Assessmentl Review|l
Questionsl &l Answers|l Gradel A|l 100%l
Correctl (Verifiedl Solutions)-l Herzing
Q:l whatl isl thel purposel ofl thel fourl valvesl ofl thel heart
Answer:
Theyl permitl bloodl tol flowl forwardl andl preventl bloodl froml flowingl backwardl duringl
contraction.
Q:l Thel twol atrioventricularl (AV)l valvesl separate
Answer:
atrial froml thel ventricles
Q:l Thel tricuspidl valvel separatesl the
Answer:
rightl atriuml andl rightl ventricle
Q:l mitraLl (bicuspid)l valvel separatesl the
Answer:
leftl atriuml andl leftl ventricle.
,Q:l Thel AVl valvesl arel openl (dilated)l duringl the
Answer:
ventricularl fillingl period—orl diastole
Q:l Thel AVl valvesl closel during
Answer:
ventricularl contraction—orl systole—tol preventl regurgitationl orl backflowl ofl blood.
Q:l Thel twol semilunarl valvesl separate
Answer:
thel ventriclesl froml thel greatl vessels
Q:l Thel valvesl arel namedl after
Answer:
thel vessell thatl theyl fill
Q:l endocardium
Answer:
thinl liningl thel insidel ofl thel heart'sl chambersl andl valves.
,Q:l myocardium
Answer:
Thel thickl muscularl middlel layerl responsiblel forl thel pumpingl actionl ofl thel heart
Q:l epicardium
Answer:
thinl musclel layerl onl thel outsidel ofl thel heart
Q:l pericardium
Answer:
Thel toughl fibrousl enclosesl andl protectsl thel heart.l Itsl twol layersl containl al smalll
amountl ofl pericardiall fluidl forl lubricationl duringl pumping.
Q:l Al smalll electricall impulsel thatl firesl inl the
Answer:
sinoatriall (SA)l nodel inl thel rightl atriuml generatesl thel normall heartbeat.
Q:l thel ratel ofl firingl inl thel SAl nodel determines
Answer:
ventricularl contractionl andl pulsel rate.
, Q:l Bloodl thatl entersl thel rightl sidel ofl thel heartl circulatesl to
Answer:
thel lungs
Q:l bloodl thatl entersl thel leftl sidel circulatesl to
Answer:
thel body
Q:l inl otherl bodyl areasl EXCEPTl forl inl thel heart,l arteriesl carryl whatl kindl ofl blood
Answer:
oxygenated
Q:l inl otherl bodyl areasl EXCEPTl forl inl thel heart,l veinsl carryl whatl kindl ofl blood
Answer:
deoxygenated
Q:l inl thel heart,l arteriesl carry
Answer:
deoxygenatedl blood
