Cardiac conduction

Where are the electrical signals for the conduction process created?

• SA Node

• AV Node

• Purkinje Fibres

• Bundles of His

What is the second structure that electrical signals pass through in the conduction process?

• AV Node

• SA Node

• Purkinje Fibres

• Bundles of His

What does depolarization result in?

• relaxation

• contraction

• repulsion

• attraction

What does repolarization result in?

• relaxation

• contraction

• attraction

• repulsion

What is going on in the heart during the T-wave

• SA node triggers depolarization in atria
• AV node triggers depolarization in ventricle, the main pumpung action
• Delay caused by the SA node
• Repolarization of the ventricle 

The last place electrical impulses move through the heart is located where?

• the AV Node

• the Purkinje fibers

• the SA Node

• the AV Bundle

Depolarization of a heart chamber such as the left atrium means the left atrium has

• contracted

• relaxed

The P wave on an ECG printout represents

• contraction of the ventricles

• relaxation of the ventricles

• contraction of the atria

• relaxation of the atria

The T wave on an ECG printout represents

• contraction of the ventricles

• relaxation of the ventricles

• contraction of the atria

• relaxation of the atria

Which part of the ECG corresponds to the repolarization of the ventricle?

• P wave
• QRS complex
• T wave
• none of the above