News tagged with heart

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

Scientists explain stress-heart attack link

Scientists said Sunday they may have unravelled how chronic stress leads to heart attack and stroke: triggering overproduction of disease-fighting white blood cells which can be harmful in excess.

Jun 22, 2014
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An attractive solution for heart repair

Stem cell therapy is a promising option for repairing heart tissue damaged by heart attack. However, the main obstacle to cardiac stem cell therapy also happens to be pretty difficult to get around – and ...

Aug 15, 2014
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US study questions need for most to cut salt

A large international study questions the conventional wisdom that most people should cut back on salt, suggesting that the amount most folks consume is OK for heart health—and too little may be as bad ...

Aug 14, 2014
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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