EKG Vocab

This structure of the conduction system is known as the pacemaker.

• AV node

• Bundle of HIS

• SA node

• Purkinje fibers

A small square on EKG paper measures ____.

• 2 seconds

• 0.2 seconds

• 4 seconds

• 0.04 seconds

This is the abbreviation for electrocardiogram.

• ECK

• EKG

• EEG

• ECG

Depolarization is the contraction of a muscle.

• True

• False

This is the record of ventricular depolarization (AV node, Bundle of HIS & Purkinje fibers).

• P wave

• PR segment

• QRS complex

• T wave

Which of the following is a precordial lead?

• Lead I

• V3

• aVL

• Right Arm

Repolarization means contraction of the heart muscle.

• True

• False

What is the standard speed of an EKG machine?

• 10 mm/sec

• 20 mm/sec

• 25 mm/sec

• 30 mm/sec

The record of atrial depolarization is the QRS complex.

• True

• False

The superior vena cava drains blood into the __________.

• left artrium

• right atrium

• left ventricle

• right ventricle