Cardiology

Odds for death, hospital care rise when statins are stopped

(HealthDay)—Living longer often means living with multiple health problems and numerous medications to manage them. Understandably, many doctors and their patients wonder if any of these drugs can be discontinued safely.

Health

Study finds new and effective treatment for vitamin D deficiency

There are several million people worldwide with various fat malabsorption syndromes including those who have undergone gastric bypass surgery and those with obesity. These patients often have a difficult time absorbing vitamin ...

Medical research

A breakthrough in the physics of blood clotting

Heart attacks and strokes—the leading causes of death in human beings—are fundamentally blood clots of the heart and brain. Better understanding how the blood-clotting process works and how to accelerate or slow down ...

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Heart

The heart is a muscular organ in all vertebrates responsible for pumping blood through the blood vessels by repeated, rhythmic contractions, or a similar structure in annelids, mollusks, and arthropods. The term cardiac (as in cardiology) means "related to the heart" and comes from the Greek καρδιά, kardia, for "heart."

The heart of a vertebrate is composed of cardiac muscle, an involuntary striated muscle tissue which is found only within this organ. The average human heart, beating at 72 beats per minute, will beat approximately 2.5 billion times during a lifetime (about 66 years). It weighs on average 250 g to 300 g in females and 300 g to 350 g in males.

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