Electrical Activity in the Heart

During the Cardiac Cycle, Ventricular systole is when what happens?

• The Left Ventricle contracts
• When the Right Ventricle contracts
• When the Atria contract
• When both Ventricles contract

The number of times the heart Ventricles beat in one minute is known as?

• Heart Rate
• Stroke Volume
• Cardiac Output

The volume of blood ejected each time a Ventricle contracts is known as?

• Heart Rate
• Stroke Volume
• Cardiac Output

Bradycardia is

• Rest heart rate above 60BPM
• Resting heart rate below 40 BPM
• Resting Heart Rate below 60BPM
• Resting Heart Rate above 100 BPM

Tags

NGSS.HS-LS1-3

What do the letters EKG stand for?

• Electrocardiograph
• Electromagneticgraph
• Electrocardiogram 
• Electrolytes

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.

An EKG is actually

• A ratio
• An equation
• A time frame
• A graph 

What letters are used to label the parts of an EKG?

• PQRST 
• ABCDE
• ACDC
• DNAI

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