, Advanced EKG Exam Review Multiple
Choice Questions and Answers 100%
Pass Graded A+
Which are the two phases of the cardiac cycle?
Diastole and systole
Depolarization and repolarization
Automaticity and conductivity
Impulse transmission and resting potential - Answer>> Diastole
and systole
Which cardiac layer is the thick muscular layer?
Epicardium
Myocardium
Endocardium
Pericardium - Answer>> Myocardium
Which statement best describes cardiac cells at rest?
,Cardiac cells at rest exhibit an action potential which is when the
transmission of electrical impulses take place.
Cardiac cells at rest are electrically charged in preparation for
contraction.
Cardiac cells at rest have positive electrical charges in the cell
and negative charges outside.
Cardiac cells at rest are considered polarized, meaning that no
electrical activity takes place. - Answer>> Cardiac cells at rest
are considered polarized, meaning that no electrical activity takes
place.
The coronary artery that supplies the anterior and ventricular
septal walls of the heart is the:
left circumflex artery.
posterior descending artery.
left anterior descending artery.
right coronary artery. - Answer>> left anterior descending
artery.
, The primary pacemaker of the heart is:
Bachmann's bundle.
the bundle of His.
the sinoatrial (SA) node.
the atrioventricular (AV) node. - Answer>> sa
Which statement describes depolarization?
When ions cross cell membranes to cause the cell to contract
When cardiac cells are fully at rest
When cardiac cells are returning to their resting state
When cardiac cells are unable to contract - Answer>> When
ions cross cell membranes to cause the cell to contract
Cardiac cells have the ability to generate an electrical impulse
which is called:
vasodilation.
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