HUMAN HEART
In order to understand diseases that affect the human heart, it's important to know how the heart normally works. The human heart is a hollow, muscular organ about the size of a fist. Its job is to pump blood through a network of blood vessels. These vessels form a loop, which starts at the heart, goes out through your body, and then ends back at the heart again. Together, the heart, blood, and blood vessels are part of the circulatory system, which does two of the most important jobs in the body:
- It carries oxygen and nutrients to all of your cells
- It picks up carbon dioxide and other waste products that your body produces so they can be disposed of.
HOW THE HEART WORK?
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