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.
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 ...
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 ...
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 ...
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 ...
Mechanism discovered by which body's cells encourage tuberculosis infection
Dec 10, 2009 |
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Scientists have discovered a signaling pathway that tuberculosis bacteria use to coerce disease-fighting cells to switch allegiance and work on their behalf. Epithelial cells line the airways and other surfaces ...
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 ...
Painkiller undermines aspirin's anti-clotting action
Dec 14, 2009 |
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Millions of Americans take Celebrex for arthritis or other pain. Many, if they are middle-aged or older, also take a low-dose aspirin tablet daily to reduce the risk of heart attack and stroke. Yet they may be getting little ...
Surgery on beating heart thanks to robotic helping hand
Dec 11, 2009 |
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If you've been waiting for the day to arrive when computers actually start performing surgery, that moment might soon be upon us. A French team has developed a computerized 3D model that allows surgeons to use robotics to ...
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 ...
Most eligible patients miss out on cardiac resynchronization therapy for heart failure
Dec 11, 2009 |
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Most patients with heart failure likely to benefit from a pacemaker including the capacity for cardiac resynchronization therapy (CRT) do not receive such an implantable device, reports a national study in the December 2009 ...
Strict blood sugar control in some diabetics does not lower heart attack, stroke risk
Dec 14, 2009 |
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(PhysOrg.com) -- Strictly controlling blood glucose levels in type 2 diabetics with coexisting health problems such as heart disease and hypertension does not lower their risk of a heart attack or stroke, according to a UC ...
Moderate weight loss in obese people improves heart function
Dec 11, 2009 |
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Obese patients who lost a moderate amount of weight by eating less and exercising more improved their cardiovascular health, says a study at Washington University School of Medicine in St. Louis.
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 ...
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.
