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Identify the following rhythm (lead I): ____________________

Complete the following ECG criteria for a sinoatrial (SA) block: Rhythm   Rate   P waves   PR interval   QRS duration  

The point where the QRS complex and the ST segment meet is called the ST junction or J-point.

List the FOUR major electrolytes that influence cardiac function.

Which of the following correctly reflects examples of ectopic (latent) pacemakers?

In most ECG leads, a normal Q wave is less than 0.04 second in duration and less than one third the amplitude of the R wave in that lead.

The absolute refractory period begins with the onset of the _____ and terminates _____.

Write a short journal entry (~ 200-400 words) about a recent TV show you watched. Describe your favorite character and summarize the plot of the episode. 

If the wave of depolarization (electrical impulse) moves toward the positive electrode, the waveform recorded on ECG graph paper will be upright (positive deflection).

The stage of development that is characterized by reaching sexual maturity and the ability to reproduce is _________.