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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...
Khan Academy
Circulatory System and the Heart, Human Anatomy and Physiology, Health and Medicine
Watch as the Khan Academy explains why red blood cells are efficient carriers of hemoglobin and explains the difference between pulmonary arteries and veins. This thorough video, complete with excellent explanations and diagrams, will...
Sophia Learning
Sophia: Heart and Blood Flow: Heart
A narrated tutorial to identify the major structures of the heart and the specific role in the overall functioning of the heart. [6:55]