News tagged with heart

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

Food companies teach US dietitians about nutrition

(AP)—Snack and soda makers that often are blamed for fueling U.S. obesity rates play a surprising role in how Americans learn about healthy eating: they teach dietitians as part of their behind-the-scenes efforts to burnish ...

Feb 26, 2014
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Keep your heart healthy

(HealthDay)—Here's the bad news: Heart disease is the leading cause of death in the United States, and 49 percent of adults have at least one risk factor for the disease. But the good news is that there ...

Mar 16, 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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