News tagged with heart

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

Beetroot juice supplementation may help lengthen workouts

(HealthDay)—Chronic supplementation with beetroot juice (BRJ), containing nitrate, has beneficial effects on the work of the heart in response to exercise, according to a study published online June 17 in the American Journal ...

18 hours ago
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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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