CARDIOVASCULAR (SLIDES) PPT. 2 EXAM WITH CORRECT
ANSWERED QUESTIONS LATEST DOWNLOAD 2024/2025 BEST
SOLUTION GRADED A+ FOR SUCCESS
myogenic - CORRECT ANSWERS heartbeat originates within heart
autorhythmic - CORRECT ANSWERS regular, spontaneous depolarization
pacemaker of heart - CORRECT ANSWERS SA node
SA node - CORRECT ANSWERS initiates heartbeat, sets heart rate
AV node - CORRECT ANSWERS electrical gateway to ventricles
what does the AV node have a brief delay - CORRECT ANSWERS allows the atria can contract before
the ventricles
AV bundle is aka... - CORRECT ANSWERS Bundle of His
AV bundle (bundle of His) - CORRECT ANSWERS pathway for signals from AV node
right and left bundle branches - CORRECT ANSWERS divisioms of AV bundle that enter
interventricular septum
Purkinje fibers - CORRECT ANSWERS upward from apex, spread throughout ventricular myocardium
in order to maximize ventricular ejection
1st step of cardiac conduction system - CORRECT ANSWERS SA node activity and atrial activation
begins
2nd step of cardiac conduction system - CORRECT ANSWERS stimulus spreads across atrial surfaces
and reaches the AV node
3rd step of cardiac conduction system - CORRECT ANSWERS 100 msec delay at the AV node, atrial
contraction begins
, CARDIOVASCULAR (SLIDES) PPT. 2 EXAM WITH CORRECT
ANSWERED QUESTIONS LATEST DOWNLOAD 2024/2025 BEST
SOLUTION GRADED A+ FOR SUCCESS
4th step of cardiac conduction system - CORRECT ANSWERS impulse travels along the
interventricular septum within the AV bundle and the bundle branches to the purkinje fibers and to
the papillary muscles of the right ventricle
5th step of cardiac conduction system - CORRECT ANSWERS impulse is distributed by purkinje fibers
and relayed throughout the ventricular myocardium, atrial contraction completes and ventricular
contraction begins
stable resting potential of myocytes - CORRECT ANSWERS -90mv
Step 1 of cardiac action potential - CORRECT ANSWERS depolarization (veri brief)
what causes depolarization of a cardiac cell? - CORRECT ANSWERS Na+ gates open and Na+ rushes in
and gates close quickly
peak of cardiac action potential - CORRECT ANSWERS +30mV
Step 2 of cardiac action potential - CORRECT ANSWERS plateau (200-250 msec long)
what happens during the plateau of a cardiac action potential? - CORRECT ANSWERS Contraction:
Slow Ca2+ channels open, Ca2+ binds to fast Ca2+ channels on SR, releases Ca2+ into cytosol
Step 3 of cardiac action potential - CORRECT ANSWERS repolarization
what happens during repolarization of a cardiac cell? - CORRECT ANSWERS Ca2+ channels close and
K+ channels open, rapid K+ outflux returns cell to resting potential
what happens during phase 0 - CORRECT ANSWERS Na+ channels open
what happens during phase 1 - CORRECT ANSWERS Na+ channels close
what happens during phase 2 - CORRECT ANSWERS Ca2+ channels open, fast K+ channels close
ANSWERED QUESTIONS LATEST DOWNLOAD 2024/2025 BEST
SOLUTION GRADED A+ FOR SUCCESS
myogenic - CORRECT ANSWERS heartbeat originates within heart
autorhythmic - CORRECT ANSWERS regular, spontaneous depolarization
pacemaker of heart - CORRECT ANSWERS SA node
SA node - CORRECT ANSWERS initiates heartbeat, sets heart rate
AV node - CORRECT ANSWERS electrical gateway to ventricles
what does the AV node have a brief delay - CORRECT ANSWERS allows the atria can contract before
the ventricles
AV bundle is aka... - CORRECT ANSWERS Bundle of His
AV bundle (bundle of His) - CORRECT ANSWERS pathway for signals from AV node
right and left bundle branches - CORRECT ANSWERS divisioms of AV bundle that enter
interventricular septum
Purkinje fibers - CORRECT ANSWERS upward from apex, spread throughout ventricular myocardium
in order to maximize ventricular ejection
1st step of cardiac conduction system - CORRECT ANSWERS SA node activity and atrial activation
begins
2nd step of cardiac conduction system - CORRECT ANSWERS stimulus spreads across atrial surfaces
and reaches the AV node
3rd step of cardiac conduction system - CORRECT ANSWERS 100 msec delay at the AV node, atrial
contraction begins
, CARDIOVASCULAR (SLIDES) PPT. 2 EXAM WITH CORRECT
ANSWERED QUESTIONS LATEST DOWNLOAD 2024/2025 BEST
SOLUTION GRADED A+ FOR SUCCESS
4th step of cardiac conduction system - CORRECT ANSWERS impulse travels along the
interventricular septum within the AV bundle and the bundle branches to the purkinje fibers and to
the papillary muscles of the right ventricle
5th step of cardiac conduction system - CORRECT ANSWERS impulse is distributed by purkinje fibers
and relayed throughout the ventricular myocardium, atrial contraction completes and ventricular
contraction begins
stable resting potential of myocytes - CORRECT ANSWERS -90mv
Step 1 of cardiac action potential - CORRECT ANSWERS depolarization (veri brief)
what causes depolarization of a cardiac cell? - CORRECT ANSWERS Na+ gates open and Na+ rushes in
and gates close quickly
peak of cardiac action potential - CORRECT ANSWERS +30mV
Step 2 of cardiac action potential - CORRECT ANSWERS plateau (200-250 msec long)
what happens during the plateau of a cardiac action potential? - CORRECT ANSWERS Contraction:
Slow Ca2+ channels open, Ca2+ binds to fast Ca2+ channels on SR, releases Ca2+ into cytosol
Step 3 of cardiac action potential - CORRECT ANSWERS repolarization
what happens during repolarization of a cardiac cell? - CORRECT ANSWERS Ca2+ channels close and
K+ channels open, rapid K+ outflux returns cell to resting potential
what happens during phase 0 - CORRECT ANSWERS Na+ channels open
what happens during phase 1 - CORRECT ANSWERS Na+ channels close
what happens during phase 2 - CORRECT ANSWERS Ca2+ channels open, fast K+ channels close
