Related topics: heart failure , heart attack , heart muscle , heart disease , stem cells
Heart
hideThe 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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News tagged with heart
Want to live well? Harvard experts offer pragmatic pointers on getting healthy and staying there
Dec 17, 2009 |
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You are what you eat. You're also how you feel, how you exercise, how you sleep, how you handle money, how you relate to people, and what you value.
Heart cells on lab chip display 'nanosense' that guides behavior
Nanotechnology / Bio & Medicine
Dec 15, 2009 |
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Johns Hopkins biomedical engineers, working with colleagues in Korea, have produced a laboratory chip with nanoscopic grooves and ridges capable of growing cardiac tissue that more closely resembles natural ...
Low cholesterol transfer protein activity associated with heart disease risk
Dec 15, 2009 |
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Although seen as a potential heart disease therapy, raising high-density lipoprotein (HDL) cholesterol levels by inhibiting activity of a transfer protein may not be effective, a new study suggests. Scientists at the Jean ...
Good cholesterol not as protective in people with type 2 diabetes
19 hours ago |
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High-density lipoprotein (HDL), known as "good" cholesterol, isn’t as protective for people with type 2 diabetes, according to research reported in Circulation: Journal of the American Heart Association.
Genetic link to heart failure
Dec 15, 2009 |
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A team of researchers, at Washington University School of Medicine, St Louis, has identified a group of 12 genetic variants in the HSPB7 gene that is associated with heart failure in humans.
Heart drugs show promise for fighting colon cancer
Dec 16, 2009 |
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Scientists in Sweden are reporting for the first time that a group of drugs used to treat heart failure shows promise for fighting colon cancer. The study is in ACS' Journal of Natural Products. Colon cancer ...
Breathlessness eased in patients with rare, often fatal disease
Dec 17, 2009 |
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Patients with a rare, deadly disease that mostly affects young women felt a dramatic reduction in breathlessness using an approved drug, according to study results published online today in The Journal of Heart and Lung Tr ...
New gene linked to congenital heart defects
Dec 17, 2009 |
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(PhysOrg.com) -- Researchers from the UC San Diego School of Medicine and colleagues have identified a new gene, ETS-1, that is linked to human congenital heart defects. The landmark study, recently published online in the ...
Are patients losing sleep over blood pressure monitors?
Dec 17, 2009 |
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A widely used test for measuring nighttime blood pressure may interfere with patients' sleep, thus affecting the results of the test, reports a study in an upcoming issue of Clinical Journal of the American Society of Ne ...
Disparity in use of implantable devices to prevent sudden death in heart failure patients
Dec 18, 2009 |
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A study of heart failure patients who meet national guidelines for devices that stabilize and strengthen the heart's electrical system found that only half of eligible patients received the devices. The study, which is the ...
Medical simulators can breathe, bleed, give birth -- and help students hone skills
Dec 21, 2009 |
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It was a high-stress situation for three nurses who had never delivered babies: A woman was 32 weeks pregnant, in pain and having contractions.
Heart transplant patients appear to have elevated risk for multiple skin cancers
19 hours ago |
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Many heart transplant patients develop multiple skin cancers, with increased risk for some skin cancers among patients with other cancers and with increasing age, according to a report in the December issue of Archives of ...
Study: Sticking with heart rehab boosts survival
19 hours ago |
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(PhysOrg.com) -- Medicare beneficiaries with heart disease who attended more cardiac rehabilitation sessions had fewer heart attacks and were less likely to die within four years than those who went to rehab less, researchers ...
