Mapping the heart to prevent damage caused by a heart attack

Scientists at the Victor Chang Cardiac Research Institute in Australia have produced a first of its kind integrated map of heart cells which unlocks the process of cardiac fibrosis—a major cause of heart failure.


How, and why, to reset your kids' screen use for summer

The long, warm days of summer unlock countless opportunities for fun and make the school break a great time to re-calibrate family rules around screen use. UCSF Benioff Children's Hospital pediatrician and screen time researcher ...


Hot enough for ya? It may be too hot for your heart health!

It's only the first day of summer and record high temperatures are already being reported across much of the U.S. That's prompted the American Heart Association, celebrating a century of lifesaving service as the world's ...


Video: Exercising with hypertrophic cardiomyopathy

About 1 in 500 people have hypertrophic cardiomyopathy (HCM). It's a condition where the heart muscle becomes abnormally thick. HCM is one of the most common causes of sudden death among young athletes and otherwise healthy ...

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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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