Terminology
Abnormal rhythm
What is arrhythmia?
Primary pacemaker of the heart
What is the SA node?
Records the electrical activity within the heart
What is an electrocardiogram?
Chambers that receive blood
What are the right and left atrium?
Ability of cardiac cells to receive impulses. ***ALL cardiac cells can receive impulses.***
What is conductivity?
Secondary pacemaker of the heart
What is the AV node?
Lines between waveforms
What are segments?
Chambers that deliver blood
What are the right and left ventricules?
Ability of cardiac cells to shorten, lengthen, and respond to electrical stimuli.
What is contractility?
Final pacemaker of the heart; intrinsic rate of 40-60 beats per minute.
What is the Bundle of HIS?
A specific duration of time that includes at least one wave and a connecting segment.
What is an interval?
Separates the right and left sides of the heart
What is the septum?
Electrical process that initiates the contraction of the muscle.
What is depolarization?
Branch off the Bundle of HIS; has bunny ear appearance on an ECG
What is a right bundle branch?
Atrial depolarization
Ventricular depolarization
What is the P wave? What is the T wave?
Feeds the right side of the heart
What is the right coronary artery?
Movement of charged particles back to a resting state.
What is repolarization?
Branch off the Bundle of HIS; has a fireman's helmet appearance on an ECG
What is a left bundle branch?
Ventricular depolarization and atrial repolarization
What is the QRS complex?
Branches off into the LAD and circumflex
What is the left coronary artery?