Chapter 12

Refers to amount, extent, size, abundance, or fullness.

Additional electrical activity picked up by the electrocardiograph that interferes with the normal appearance of the ECG cycles.

Buildup of fibrous plaques of fatty deposits and cholesterol on the inner walls of the coronary arteries.

The flat horizontal line that separetes the various waves of the ECG cycle.

One complete heartbeat.

An irregular heart rhythm; also termed arrhythmia.

The graphic representation of a heartbeat.

The graphic representation of the electrical activity of the heart.

The instrument used to record the electrical activity of the heart.

A condutor of electricity, which is use to promote contact between the body and the electrocardiograph.

A chemical substance that promotes conduction of an electrical current.

The length of a wave or the length of a wave with a segment.

Deficiency of blood in a body part.

Refers to an ECG that is within normal limits.

The portion of the ECG between two waves.

An instrument for measuring air taken into and expelled from the lungs.

Measurement of an individual's breathing capacity by means of a spirometer.