EKG Basics Quiz

What is the purpose of the p wave in an EKG?

• To indicate ventricular depolarization

• To indicate atrial depolarization

• To indicate atrial repolarization

• To indicate ventricular repolarization

What does a flat isoelectric line in an EKG indicate?

• Ventricular depolarization

• No electrical activity

• Perpendicular movement of electrical activity

• Atrial depolarization

What is the name of the segment between the end of the p wave and the start of the QRS complex?

• TP segment

• QT segment

• ST segment

• PR segment

Where is the SA node located?

• Right atrium near the entry of the superior vena cava

• Left atrium

• Right ventricle

• Top of the interventricular septum

What is the function of the AV node in an EKG?

• To generate action potentials

• To repolarize the atria

• To repolarize the ventricles

• To slow down the conduction of electrical activity

What does an upward deflection in an EKG indicate?

• Positive charges moving towards the positive electrode

• Negative charges moving towards the positive electrode

• Positive charges moving away from the positive electrode

• Negative charges moving away from the positive electrode

Tags

NGSS.HS-PS2-5

What is the name of the interval from the beginning of the p wave to the end of the PR segment?

• QT interval

• ST interval

• TP interval

• PR interval

What is the main vector of atrial depolarization in an EKG?

• Upward and rightward towards the SA node

• Downward and leftward towards the AV node

• Downward and rightward towards the ventricles

• Upward and leftward towards the atria

What is the function of the SA node in an EKG?

• To slow down the conduction of electrical activity

• To generate action potentials

• To repolarize the atria

• To repolarize the ventricles

What does a downward deflection in an EKG indicate?

• Positive charges moving towards the positive electrode

• Negative charges moving towards the positive electrode

• Positive charges moving away from the positive electrode

• Negative charges moving away from the positive electrode

Tags

NGSS.HS-PS2-5