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Heart (anatomy)

HEART ANATOMY The heart is the body’s epicenter of life activity. No larger than the size of a fist, the heart is hollow, divided into four basic chambers, and the most important muscle in the human body. In an adult female, the heart weighs about 225 grams. In an adult male more...

Hypertrophic cardiomyopathy (diseases)

When the muscles of the heart start to thicken, making it difficult for the blood to flow from it, the heart has to work double time to be able to pump blood for the rest of the body. This condition is known as Hypertrophic Cardiomyopathy or HCM, and it is more...

Irregular heartbeat (diseases)

The heart is a muscle with four chambers that contract at regulated intervals to pump blood throughout the body. These contractions are generated by electricity that passes with very precise speeds through distinct pathways along the fibers of the heart muscle. This electricity originates from the heart's sinoatrial node, also known more...