An instrument called an electrocardiograph picks up the electrical changes in the heart muscle and amplifies them to record an electrocardiogram in the form of five or six waves. The first five waves are labeled P, Q, R, S, and T. A sixth wave, when present, is called the u wave. Which of the following statements best describes this process?

Question

Quizplus · Accepted Answer

An electrocardiograph is the machine that makes the electrocardiogram. In the normal electrocardiogram, one can see that the electrical activity in the heart is normally steady and unchanging, with consistent P,Q,R,S,T, and sometimes u waves. The word breaks down into the suffix -graph meaning to record, and two root/combining forms: electr/o- meaning electricity and -cardi/o- meaning the heart.

An Instrument Called an Electrocardiograph Picks Up the Electrical Changes