SHARP EKG EXAM Questions and
Answers Graded A+
Pericardium - Correct answer-Outermost layer consisting of fibrous pericardium
and serous pericardium
fibrous pericardium - Correct answer-Comes in direct contact with lungs
Serous pericardium - Correct answer-Inner two layered fluid secreting membrane
Myocardium - Correct answer-Middle heart layer, responsible for heart contraction
Endocardium - Correct answer-Inner heart layer, fold of this tissue forms valves of
the heart
Myocardial cells - Correct answer-Working cells, function is cardiac muscle
contraction
Pacemaker cells - Correct answer-Found in conduction system of the heart,
generate electrical impulses
Automaticity - Correct answer-Generate their own electrical impulses , just
pacemaker cells
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
, Excitability - Correct answer-Respond to impulse, all cardiac cells
Conductivity - Correct answer-Conduct impulse, all cardiac cells
Contractility - Correct answer-Makes heart contraction occur, specific to
myocardial muscle cells
Cation - Correct answer-Positive charge
Anion - Correct answer-Negative charge
Potassium - Correct answer-Inside cells
Sodium - Correct answer-Outside cells
Resting cardiac cells - Correct answer-More negative ions inside cell than outside
cell
Polarized - Correct answer-When ions are aligned, resting state, ecg shows straight
line
Depolarized - Correct answer-Electrical events cause muscle contraction,
potassium begins to leave cell, sodium rushes into cell causing a more positive
charge generating muscle contraction
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
Answers Graded A+
Pericardium - Correct answer-Outermost layer consisting of fibrous pericardium
and serous pericardium
fibrous pericardium - Correct answer-Comes in direct contact with lungs
Serous pericardium - Correct answer-Inner two layered fluid secreting membrane
Myocardium - Correct answer-Middle heart layer, responsible for heart contraction
Endocardium - Correct answer-Inner heart layer, fold of this tissue forms valves of
the heart
Myocardial cells - Correct answer-Working cells, function is cardiac muscle
contraction
Pacemaker cells - Correct answer-Found in conduction system of the heart,
generate electrical impulses
Automaticity - Correct answer-Generate their own electrical impulses , just
pacemaker cells
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
, Excitability - Correct answer-Respond to impulse, all cardiac cells
Conductivity - Correct answer-Conduct impulse, all cardiac cells
Contractility - Correct answer-Makes heart contraction occur, specific to
myocardial muscle cells
Cation - Correct answer-Positive charge
Anion - Correct answer-Negative charge
Potassium - Correct answer-Inside cells
Sodium - Correct answer-Outside cells
Resting cardiac cells - Correct answer-More negative ions inside cell than outside
cell
Polarized - Correct answer-When ions are aligned, resting state, ecg shows straight
line
Depolarized - Correct answer-Electrical events cause muscle contraction,
potassium begins to leave cell, sodium rushes into cell causing a more positive
charge generating muscle contraction
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
