SHARP EKG EXAM WITH ANSWERS
Pericardium |- |correct |answers✔✔Outermost |layer |consisting |of |fibrous |pericardium
|and |serous |pericardium
fibrous |pericardium |- |correct |answers✔✔Comes |in |direct |contact |with |lungs
Serous |pericardium |- |correct |answers✔✔Inner |two |layered |fluid |secreting |membrane
Myocardium |- |correct |answers✔✔Middle |heart |layer, |responsible |for |heart
|contraction
Endocardium |- |correct |answers✔✔Inner |heart |layer, |fold |of |this |tissue |forms |valves
|of |the |heart
Myocardial |cells |- |correct |answers✔✔Working |cells, |function |is |cardiac |muscle
|contraction
Pacemaker |cells |- |correct |answers✔✔Found |in |conduction |system |of |the |heart,
|generate |electrical |impulses
Automaticity |- |correct |answers✔✔Generate |their |own |electrical |impulses |, |just
|pacemaker |cells
Excitability |- |correct |answers✔✔Respond |to |impulse, |all |cardiac |cells
Conductivity |- |correct |answers✔✔Conduct |impulse, |all |cardiac |cells
Contractility |- |correct |answers✔✔Makes |heart |contraction |occur, |specific |to
|myocardial |muscle |cells
, Cation |- |correct |answers✔✔Positive |charge
Anion |- |correct |answers✔✔Negative |charge
Potassium |- |correct |answers✔✔Inside |cells
Sodium |- |correct |answers✔✔Outside |cells
Resting |cardiac |cells |- |correct |answers✔✔More |negative |ions |inside |cell |than |outside
|cell
Polarized |- |correct |answers✔✔When |ions |are |aligned, |resting |state, |ecg |shows
|straight |line
Depolarized |- |correct |answers✔✔Electrical |events |cause |muscle |contraction,
|potassium |begins |to |leave |cell, |sodium |rushes |into |cell |causing |a |more |positive
|charge |generating |muscle |contraction
Repolarization |- |correct |answers✔✔Cardiac |cells |begin |to |recover, |sodium |moves |out
|of |cells, |potassium |moves |back |in |causing |a |more |negative |charge |to |create |a
|resting |state
P |wave |- |correct |answers✔✔Depolarization |of |atria |in |response |to |SA |node
|triggering, |0.10 |sec |or |less
PRI |- |correct |answers✔✔Delay |of |AV |node |to |allow |filling |of |ventricles, |0.12-0.20
QRS |complex |- |correct |answers✔✔Depolarization |of |ventricles, |triggers |main
|pumping |contractions, |0.10 |sec |or |less
Pericardium |- |correct |answers✔✔Outermost |layer |consisting |of |fibrous |pericardium
|and |serous |pericardium
fibrous |pericardium |- |correct |answers✔✔Comes |in |direct |contact |with |lungs
Serous |pericardium |- |correct |answers✔✔Inner |two |layered |fluid |secreting |membrane
Myocardium |- |correct |answers✔✔Middle |heart |layer, |responsible |for |heart
|contraction
Endocardium |- |correct |answers✔✔Inner |heart |layer, |fold |of |this |tissue |forms |valves
|of |the |heart
Myocardial |cells |- |correct |answers✔✔Working |cells, |function |is |cardiac |muscle
|contraction
Pacemaker |cells |- |correct |answers✔✔Found |in |conduction |system |of |the |heart,
|generate |electrical |impulses
Automaticity |- |correct |answers✔✔Generate |their |own |electrical |impulses |, |just
|pacemaker |cells
Excitability |- |correct |answers✔✔Respond |to |impulse, |all |cardiac |cells
Conductivity |- |correct |answers✔✔Conduct |impulse, |all |cardiac |cells
Contractility |- |correct |answers✔✔Makes |heart |contraction |occur, |specific |to
|myocardial |muscle |cells
, Cation |- |correct |answers✔✔Positive |charge
Anion |- |correct |answers✔✔Negative |charge
Potassium |- |correct |answers✔✔Inside |cells
Sodium |- |correct |answers✔✔Outside |cells
Resting |cardiac |cells |- |correct |answers✔✔More |negative |ions |inside |cell |than |outside
|cell
Polarized |- |correct |answers✔✔When |ions |are |aligned, |resting |state, |ecg |shows
|straight |line
Depolarized |- |correct |answers✔✔Electrical |events |cause |muscle |contraction,
|potassium |begins |to |leave |cell, |sodium |rushes |into |cell |causing |a |more |positive
|charge |generating |muscle |contraction
Repolarization |- |correct |answers✔✔Cardiac |cells |begin |to |recover, |sodium |moves |out
|of |cells, |potassium |moves |back |in |causing |a |more |negative |charge |to |create |a
|resting |state
P |wave |- |correct |answers✔✔Depolarization |of |atria |in |response |to |SA |node
|triggering, |0.10 |sec |or |less
PRI |- |correct |answers✔✔Delay |of |AV |node |to |allow |filling |of |ventricles, |0.12-0.20
QRS |complex |- |correct |answers✔✔Depolarization |of |ventricles, |triggers |main
|pumping |contractions, |0.10 |sec |or |less
