EKG EXAM 1 WITH CORRECT ANSWERS 2025

EKG EXAM 1 WITH CORRECT
ANSWERS 2025

The heart pumps only as much blood as the body requires ( correct
answers ) True

The heart cannot pump blood unless an electrical stimulus occurs first.

( correct answers ) true

An ECG represents electrical activity only, not actual pumping of the
heart.
( correct answers ) true

A dry electrode increases electrical contact and therefor improves the
clarity of waveforms. ( correct answers ) false- throw dry ones
away.

The horizontal axis of the ecg strip measures amplitude in mm or
electrical voltage in mv ( correct answers ) false- time

P-waves represent atrial depolarization and precede QRS complex

( correct answers ) true

A change in the ST segment may indicate myocardial damage.
( correct answers ) true

U waves are present in the NSR pattern ( correct answers ) false-
not always present

Always check a pulse to correlate it with the heart rate on the ECG.

( correct answers ) True

The AV node is the heart's dominant pacemaker. ( correct

answers ) false- SA Identify the 3 layers of the heart: ( correct

answers ) Epicarduim
myocardui
m
endocardiu
m
GRADED
A+

List the 4 chambers of the heart: ( correct answers )
Right/left atrium Right/left ventricular

Name the 2 atrioventricular values ( correct answers )

Tricuspid mitrial