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The cardiovascular system, including the heart, blood and blood vessels, acts as closed transport system for the body.

The circulatory system: diagram showing the heart, arteries, lungs and major organs, with a cartoon-style face and hands. Watercolour drawing by J.C. Whishaw, ca. 1853.

Cardiovascular system - Eduqas Structure of the cardiovascular system The cardiovascular system is made up of three main parts - the heart, the blood vessels and the blood that flows through them.

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.