Final answer:
The graphic recording of the electrical changes during a cardiac cycle is known as an electrocardiogram (ECG), which is an essential tool for diagnosing heart function.
Step-by-step explanation:
Today, you will create a graphic recording of the electrical changes that occur during a cardiac cycle. This is known as an electrocardiogram (ECG), also abbreviated as EKG. An electrocardiogram is a surface recording of the electrical activity of the heart that can be used for diagnosis of irregular heart function. By placing surface electrodes at strategic locations on the body, the complex electrical signal of the heart can be captured and analyzed. This provides a detailed picture of both normal and abnormal heart function, making it an indispensable clinical diagnostic tool. The standard electrocardiograph uses 3, 5, or 12 leads, with the 12-lead ECG providing the most information.