News tagged with heart
Tool-wielding robots crawl in bodies for surgery
Imagine a tiny snake robot crawling through your body, helping a surgeon identify diseases and perform operations.
May 29, 2012 |
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Twitter users given legal warning in Britain
The Internet is not a law-free zone, the British government's top law officer warned Twitter users, adding that he would not hesitate to take action over offending posts.
May 12, 2012 |
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Scientists identify major source of cells' defense against oxidative stress
Both radiation and many forms of chemotherapy try to kill tumors by causing oxidative stress in cancer cells. New research from USC on a protein that protects cancer and other cells from these stresses could one day help ...
Apr 06, 2012 |
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Lighting up plant cells to engineer biology
Cambridge researchers have developed a new technique for measuring and mapping gene and cell activity through fluorescence in living plant tissue.
Apr 05, 2012 |
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Bluetooth baby
Checking the heart of the unborn baby usually involves a stethoscope. However, an inexpensive and accurate Bluetooth fetal heart rate monitoring system has now been developed by researchers in India for long-term home care. ...
May 17, 2012 |
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Speeding up drug discovery with rapid 3-D mapping of proteins
A new method for rapidly solving the three-dimensional structures of a special group of proteins, known as integral membrane proteins, may speed drug discovery by providing scientists with precise targets ...
May 30, 2012 |
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Scientists solve a mystery of bacterial growth and resistance
Scientists at The Scripps Research Institute have unraveled a complex chemical pathway that enables bacteria to form clusters called biofilms. Such improved understanding might eventually aid the development ...
Apr 26, 2012 |
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Email 'vacations' decrease stress, increase concentration, researchers say
Being cut off from work email significantly reduces stress and allows employees to focus far better, according to a new study by UC Irvine and U.S. Army researchers.
May 03, 2012 |
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Air quality improving in many U.S. cities: report
(HealthDay) -- Air quality in America's most polluted cities has improved significantly over the past decade, according to a new report from the American Lung Association.
Apr 25, 2012 |
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Pivotal role for proteins -- from helping turn carbs into energy to causing devastating disease
Research into how carbohydrates are converted into energy has led to a surprising discovery with implications for the treatment of a perplexing and potentially fatal neuromuscular disorder and possibly even cancer and heart ...
May 24, 2012 |
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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.
For more information about Heart, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
