This first article in a two-part series covers anatomy and physiology, and the second part discusses pathophysiology.Ĭitation: Jarvis S, Saman S (2018) Cardiac system 1: anatomy and physiology. A solid and methodical understanding of how the heart works is key to understanding what can go wrong with it. It has its own circulation system and receives electric impulses that make it contract and relax, which triggers a sequence of events forming the cardiac cycle. ![]() The heart is a complex organ that pumps blood through the body with an intricate system of muscle layers, chambers, valves and nodes. How does the heart work? What does it do? What is it composed of? How do you examine it? This article offers cardiac anatomy and physiology in a nutshell
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