EKG (W2)

electrocardiogram waves will be on tesst

P wave

is the first small, upward curve that appears before the QRS complex. It represents atrial depolarization—the electrical impulse that travels through the heart's upper chambers (atria), causing them to contract and pump blood into the ventricles

Electrical activity of the Aorta

PR

segment flat line following the P wave

QRS wave

represents the rapid, synchronous depolarization of the heart's ventricles

Spread of electrical current to cause ventricular systole ( contraction)

Ventricle electrical activities

T wave

the wave that follows the QRS complex. It represents ventricular repolarization

and marks the end of ventricular systole

relax

Slow beat

Longer distance T and P segment

fast beat

Shorter distance between T and P segment