Video - Introduction to the cardiovascular system
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Video Summary
The cardiovascular system is a series of organs that work together to circulate blood throughout the body. It includes the heart, which pumps blood through blood vessels; namely the veins, arteries, and capillaries.
Arteries generally carry oxygen-rich blood away from the heart to supply the body with oxygen and nutrients, whereas veins carry carbon dioxide-rich blood and waste products from other parts of the body back into the heart. The capillaries are tiny vessels that allow nutrients and oxygen from the blood to diffuse into surrounding tissues.
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