ECG

Where are the electrical signals for the conduction process created?

• SA Node

• AV Node

• Purkinje Fibres

• Bundles of His

What does depolarization result in?

• relaxation

• contraction

• repulsion

• attraction

Tags

NGSS.HS-PS2-5

What does repolarization result in?

• relaxation

• contraction

• attraction

• repulsion

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

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

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

Place the following in the correct order:
     1.atria contract
     2. AV node
     3. Bundle of His
     4.Purkinje fibers
     5. SA node
     6. ventricles contract

• 5, 1, 2, 3, 4, 6
• 2, 1, 5, 3, 4, 6
• 5, 6, 2, 3, 4, 1
• 2, 6, 5, 3, 4, 1

What is another word for AV bundle?

• Bundle of HIS

• AV node

• Pacemaker

• Purkinje Fibers

Which structure allows a delay in the signal between the atria and ventricles, allowing ventricles to fill with blood before contracting.

• SA Node

• AV Node

• Purkinje Fibres

• Bundles of His