News tagged with heart

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

Vitamin D does not stop heart attack or stroke

(Medical Xpress)—Taking vitamin D tablets cannot ward off heart attacks or stroke according to a new study from researchers at the University of East Anglia (UEA) published in the American Journal of Cl ...

Aug 26, 2014
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Cold cash just keeps washing in from ALS challenge

In the couple of hours it took an official from the ALS Association to return a reporter's call for comment, the group's ubiquitous "ice bucket challenge" had brought in a few million more dollars.

Aug 28, 2014
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'Face time' for the heart diagnoses cardiac disease

To the careful observer, a person's face has long provided insight into what is going on beneath the surface. Now, with the assistance of a web camera and software algorithms, the face can also reveal whether or not an individual ...

Aug 29, 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.

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