Ventricular depolarization is represented by the
QRS complex
U wave
P wave
PR interval
ST segment
QRS complex
Rationale: The QRS complex represents ventricular contraction; the P wave always represents the beginning of the cardiac cycle when the atria contract. The PR interval and ST segments are measurements.
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Which of these assessments would help to identify an endocrine problem in a child?
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The area of sharpest vision in the eye is the fovea centralis
Indicate whether the statement is true or false
ECG paper is specially designed graph paper that is coated with a thin covering of ____, which melts when the heated stylus runs across it.
A. wax B. rubber C. plastic D. acrylic