Health

Sleeping too much—or too little—boosts heart attack risk

Even if you are a non-smoker who exercises and has no genetic predisposition to cardiovascular disease, skimping on sleep—or getting too much of it—can boost your risk of heart attack, according to a new University of ...

Cardiology

Native Hawaiians lowered blood pressure with hula dancing

Native Hawaiians who participated in a blood-pressure-lowering program incorporating their cultural dance of hula lowered their blood pressure more than those who received standard education on diet and exercise, according ...

Cardiology

Microbes may play a role in heart attack onset

Microorganisms in the body may contribute to destabilisation of coronary plaques and subsequent heart attack, according to late breaking research presented today at ESC Congress 2019 together with the World Congress of Cardiology.

Cardiology

High blood pressure treatment may slow cognitive decline

High blood pressure appears to accelerate cognitive decline among middle-aged and older adults, but treating high blood pressure may slow this down, according to a preliminary study presented by researchers at Columbia University ...

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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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