News tagged with heart

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

Epigenetic factors linked to obesity-related disease

Obesity has been linked to "letter" changes at many different sites in the genome, yet these differences do not fully explain the variation in people's body mass index (BMI) or why some overweight people develop health complications ...

Jan 17, 2017
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Heart rate variability linked to atrial fibrillation

(HealthDay)—Low resting short-term heart rate variability (HRV) is associated with increased incidence of atrial fibrillation (AF), according to a study published in the Jan. 24 issue of the Journal of the American College ...

Jan 17, 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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