News tagged with heart

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

Smoking linked to frailty in older adults

A recent paper published in Age & Ageing, the scientific journal of the British Geriatrics Society, finds that current smoking in older people increases the risk of developing frailty, though former smokers did not appear ...

2 hours ago
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A tumor-suppressing gene can be harmful in some cancers

The TET2 tumor suppressor gene helps guard against blood cancers and perhaps protects against heart disease. Mutations in the gene affect about 1% of people over the age of 65, making them more susceptible to those diseases. ...

Aug 16, 2017
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How Gata4 helps mend a broken heart

During a heart attack, blood stops flowing into the heart; starved for oxygen, part of the heart muscle dies. The heart muscle does not regenerate; instead it replaces dead tissue with scars made of cells called fibroblasts ...

Aug 15, 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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