BIO 223 ECG, Blood Pressure, & Pulse

ECG

a recording of the electrical activity of the heart

P wave

atrial depolarization and contraction

the mechanical events that the P wave includes are

PR interval

PR segment

QRS complex

ventricular depolarization and contraction

the mechanical events that the QRS complex includes are

ST segment

QT interval

T wave

ventricular repolarization and relaxation

the mechanical events that the T wave includes are

depolarization

occurs during the P wave and QRS complex

repolarization

occurs during the ST segment

systole

maximum pressure in arteries

diastole

arterial pressure when the heart rests between beats

120/80 mmHg

normal blood pressure

korotkoff sounds

series of sounds that correspond to changes in blood flow through an artery as pressure is released

tapping

systolic korotkoff sound

silence

diastolic korotkoff sound

pulse pressure

difference between systolic and diastolic pressure

wrist, neck, elbow

name the three most common pulse locations

QRS Complex

represents ventricular depolarization, an electrical activation of the ventricles, leading to ventricular contractio

P wave

represents atrial depolarization, an electrical activation of the atria, leading to atrial contraction

T wave

represents ventricular repolarization, an electrical recovery of the ventricles, allowing them to relax.

Blood pressure

force of blood pushing against the walls of your arteries as

your heart pumps blood throughout your body

Pulse

rhythmic beating you can feel in your arteries

each time your heart pumps blood through your body.