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Institute of Human Anatomy
How the Heart Contracts: Understanding the Electrical Activity and Heart Arrhythmias
In this video, the teacher explains how the heart is able to contract dependably through its natural pacemaker, the SA node, and other specialized cells. The electrocardiogram (ECG) is also discussed as a highly effective method of...
Catalyst University
The Cardiac Conduction System
In this video, we discuss the components of and functions of the electrical conduction system of the heart.
Sophia Learning
Sophia: Cardiac Conduction System Overview: Lesson 1
This lesson will explain and identify the components of the cardiac conduction system. It is 1 of 2 in the series titled "Cardiac Conduction System Overview."
Khan Academy
Khan Academy: Electrical System of the Heart
See where the pacemaker cells start the electrical wave of depolarization, and how it gets all the way to the ventricles of the heart. Rishi is a pediatric infectious disease physician and works at Khan Academy.
Khan Academy
Khan Academy: What Is Ventricle Fibrillation (Vfib)?
Ventricular fibrillation (also referred to as VF or v-fib) is a fatal cardiac rhythm that occurs when the lower chambers of the heart (ventricles) lose the ability to contract and circulate blood to the rest of the body. V-fib results in...