News tagged with heart

Related topics: heart attack · heart failure · heart disease · heart muscle · patients

Heart-related deaths spike at Christmas

Heart-related deaths spike during Christmas, but the effect may have nothing to do with the cold winter season, according to new research in Journal of the American Heart Association, the Open Access Journal of the American ...

Dec 22, 2016
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High pain tolerance may mask heart attack symptoms

Heart attacks may go unrecognized among individuals with high pain tolerance, putting them at an increased risk for poor recoveries, according to new research in Journal of the American Heart Association, the Open Access ...

Dec 22, 2016
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Vitamin D improves gut flora and metabolic syndrome

It is well known that a diet high in fat can trigger a metabolic syndrome, a group of symptoms that pose as risk factors for diabetes and heart disease. Scientists have now discovered that vitamin D deficiency is necessary ...

Dec 21, 2016
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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.

This text uses material from Wikipedia, licensed under CC BY-SA

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