The heart is the body's hardest-working muscle. Whether you're awake or asleep, or exercising or resting, your heart is always at work. It pumps blood through arteries to deliver oxygen to organs and ...

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The circulatory system consists of one heart, five liters of blood, and approximately 96,000 kilometers of blood vessels, responsible for transporting nutrients and waste throughout the body ...

Learn about the anatomy of the heart and how its chambers, valves, and vessels work together to maintain effective blood circulation throughout the body to sustain life.

Your circulatory or cardiovascular system serves a vital function by delivering oxygen and nutrients to all the organs and tissues of your body. Learn more about how the circulatory system works ...

Heavy metals are harmful environmental pollutants that have attracted widespread attention due to their health hazards to human cardiovascular disease. Heavy metals, including lead, cadmium, mercury, ...

Dissecting a real circulatory system is a great way to see how its structure relates to its function. Available at slaughterhouses and through some commercial butcher shops, inexpensive “cow plucks” ...

Download this Diagram Of Human Cardiovascular System Mammalian Circulation Blood Circulation System And Heart Anatomy vector illustration now. And search more of iStock's library of royalty-free ...