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EKG Chapter 2

Teacher: Andreanna
Across
Represents ventricular depolarization
The impulse originates in the __, located in the upper right atrium just beneath the opening of the super vena cava
Measures depolarization and repolarization time of the ventricles
The ability to create an impulse without outside stimulation
Is a negative deflection with no positive deflection at all
Simply an electrocariograhic picture of the hearts electrical activity
Is any positive deflection
When the cell becomes positively charged
Occurs when the predominant pacemaker slows dramatically and a lower pacemaker takes over at its inherent rate providing a new rhythm that is slower than the previous rhythm
The area of the conduction system that initiates the impulses
Fibers at the terminal ends of the bundle branches. responding for transmitting the impulses into the ventricular myocardium
Represents ventricular reploarization
The ability to pass this impulse along to neighboring cells
Is a negative deflection
Down
Counting horizontally measures time, between the P-QRS-T
The cardiac cell is at rest
Is a printout of only one or two leads at a time and is done to assess the patients heart rhythm
The cardiac cell is stimulated
The ability to contract and do work
A printout of the hearts electrical activity viewed from twelve different angles
An active transport system that returns the cell to its negative charge
Represents atrial depolarization
Counting vertically measures height of complexes
Measures the time it takes to depolarize the ventricles
Represents atrial depolarization
Is a negative deflection that follows an R wave
"Resistant to"
A strong stimulus will result in depolarization
Means "to take control away from," occurs when the one of the lower pacemakers becomes irritable and fires in at an accelerated rate, stealing control away from the predominant pacemaker.
Represents late repolarization and is not normally seen