News tagged with heart

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

More fruits and vegetables can improve health

Recent estimates show about 10 percent or fewer U.S. adults and children get the recommended 4.5 cups of total fruits and vegetables per day. The American Heart Association, the world's leading voluntary organization dedicated ...

Jun 09, 2017
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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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