McGraw-Hill Online Learning Center Test<BLURT>

McGraw-Hill Online Learning Center Test

1. Review the animation and answer the following questions.

An electrocardiogram

A. tracks the muscular contractions of the heart.
B. is used to detect valvular defects in the heart.
C. has a characteristic wave pattern due to the electrical activity of the heart.
D. can be obtained using a stethoscope.

2. The first region of the heart to receive an electrical impulse is the A. ventricles.
B. atria.
C. atrioventricular valves.
D. aortic valve.

3. To perform an electrocardiogram, leads are placed just to the right of the sternum with subsequent leads placed moving to the patient's left. The other set of leads are placed distally to the heart to allow six lines of reference occurring every 30 degrees and lying in a frontal plane. In preparation for an electrocardiogram, A. electrodes are placed directly on the heart.
B. electrodes are placed on the head of the patient.
C. the patient is asked to drink a liquid to improve visualization.
D. electrodes are placed on the patient's chest and limbs.

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