EKG

V1

• LEFT side of the sternum, directly across from V1 at the FOURTH intercostal space

• LEFT side of the chest, FIFTH intercostal space, midclavicular line

• RIGHT side of the sternum at the FOURTH intercostal space

• LEFT side of the chest, FIFTH intercostal space, midaxillary line

V2

• LEFT side of the chest, FIFTH intercostal space, midclavicular line

• LEFT side of the sternum, directly across from V1 at the FOURTH intercostal space

• LEFT side of the chest, FIFTH intercostal space, midclavicular line

• LEFT side of the chest, FIFTH intercostal space, anterior axillary line

V3

• LEFT side of the chest, FIFTH intercostal space, midaxillary line

• RIGHT side of the sternum at the FOURTH intercostal space

• LEFT side of the chest, FIFTH intercostal space, anterior axillary line

• LEFT side of the chest, midway between V2 and V4

V4

• LEFT side of the chest, FIFTH intercostal space, midclavicular line

• LEFT side of the chest, midway between V2 and V4

• LEFT side of the chest, FIFTH intercostal space, midaxillary line

• LEFT side of the sternum, directly across from V1 at the FOURTH intercostal space

V5

• LEFT side of the chest, FIFTH intercostal space, anterior axillary line

• LEFT side of the chest, FIFTH intercostal space, midaxillary line

• LEFT side of the chest, FIFTH intercostal space, midclavicular line

• LEFT side of the sternum, directly across from V1 at the FOURTH intercostal space

V6

• LEFT side of the chest, FIFTH intercostal space, midclavicular line

• LEFT side of the chest, FIFTH intercostal space, anterior axillary line

• LEFT side of the chest, FIFTH intercostal space, midaxillary line

• LEFT side of the sternum, directly across from V1 at the FOURTH intercostal space

An electrocardiogram measures what?

• The amount of pressure exerted on blood vessels.
• The electrical activity of the heart.
• How many times the heart contracts over time.
• The body's temperature caused by friction of blood in vessel.

The p-wave correlates with which event?

• atrium contraction /signals moving from SA node to AV node
• ventricle contraction
• ventricle repolarization
• both atrial and ventricle contraction

The place where the electrical current starts and is considered the heart's pacemaker:

• Sino-atrial node 
• right atrium
• atria-ventricular node 
• left ventricle

The t-wave correlates with which event?

• atrium contraction /signals moving from SA node to AV node
• ventricle contraction
• ventricle repolarization
• both atrial and ventricle contraction