News tagged with heart

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

Protein expression gets the heart pumping

Most people think the development of the heart only happens in the womb, however the days and weeks following birth are full of cellular changes that play a role in the structure and function of the heart. ...

Apr 22, 2014
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Primary care doctors must influence lifestyle changes

(HealthDay)—Primary care physicians (PCPs) are increasingly called upon to manage circulatory and circulatory-related diseases among their patients, according to an article published April 10 in Medical Ec ...

Apr 22, 2014
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Pyridoxine-doxylamine drug safety data lacking

(Medical Xpress)—The most commonly prescribed drug for pregnant women suffering from morning sickness in their first trimester does not prevent birth defects even though drug safety data says it does, according to research ...

Apr 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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