News tagged with human heart
Researchers return blood cells to stem cell state
Johns Hopkins scientists have developed a reliable method to turn the clock back on blood cells, restoring them to a primitive stem cell state from which they can then develop into any other type of cell in the body.
Medical research
Aug 22, 2012 |
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Scientists uncover why the human heart can't regenerate itself
Stem cell researchers at UCLA have uncovered for the first time why adult human cardiac myocytes have lost their ability to proliferate, perhaps explaining why the human heart has little regenerative capacity.
Medical research
Aug 09, 2011 |
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Scientists discover novel mechanism by which calorie restriction influences longevity
Scientists at the Gladstone Institutes have identified a novel mechanism by which a type of low-carb, low-calorie diet—called a "ketogenic diet"—could delay the effects of aging. This fundamental discovery reveals how ...
Medical research
Dec 06, 2012 |
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Scar tissue turned into heart muscle without using stem cells
Scientists at Duke University Medical Center have shown the ability to turn scar tissue that forms after a heart attack into heart muscle cells using a new process that eliminates the need for stem cell transplant.
Cardiology
Apr 26, 2012 |
4.9 / 5 (10) |
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Retrovirus in the human genome is active in pluripotent stem cells
A retrovirus called HERV-H, which inserted itself into the human genome millions of years ago, may play an important role in pluripotent stem cells, according to a new study published in the journal Retrovirology by scient ...
Medical research
Jan 23, 2013 |
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Eating your greens can change the effect of your genes on heart disease, say researchers
A long-held mantra suggests that you can't change your family, the genes they pass on, or the effect of these genes. Now, an international team of scientists, led by researchers at McMaster and McGill universities, is attacking ...
Genetics
Oct 11, 2011 |
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Study in mice discovers injection of heat-generating cells reduces belly fat
The injection of a tiny capsule containing heat-generating cells into the abdomens of mice led those animals to burn abdominal fat and initially lose about 20 percent of belly fat after 80 days of treatment.
Medical research
Sep 05, 2012 |
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Study shows that human hearts generate new cells after birth
Researchers at Boston Children's Hospital have found, for the first time that young humans (infants, children and adolescents) are capable of generating new heart muscle cells. These findings refute the long-held belief that ...
Medical research
Jan 10, 2013 |
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Scientists discover new method for engineering human tissue regeneration
If pending clinical trials prove successful, a new discovery published in The FASEB Journal could represent a major scientific leap toward human tissue regeneration and engineering. In a research report appearing online, Yale s ...
Medical research
May 12, 2011 |
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Experts prove link between phosphate intake and heart disease
Lowering phosphate intake in humans can reduce heart disease, according to research by experts at the University of Sheffield.
Cardiology
Jun 07, 2011 |
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Institute presses for greater use of gene sequencing in medicine
Almost a year after researchers in Wisconsin published a groundbreaking paper describing their use of genetic sequencing to diagnose and treat a 4-year-old boy, a national health agency is shifting its focus to put $416 ...
Genetics
Dec 07, 2011 |
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Ancient heart drug activates body's own protective mechanisms in blood vessels
An ancient heart drug that's inspired the work of herbalists and poets for centuries may treat a condition that plagues millions of overstressed and overweight Americans today.
Medications
Jun 14, 2012 |
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The tablet of youth
At TEDxSydney 2013 the Professor of Genetics at Harvard Medical School shares a new concept about why we age and how it should be possible to develop medicines to reverse it.
Health
Apr 23, 2013 |
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Scientists build a living patch for damaged hearts
Duke University biomedical engineers have grown three-dimensional human heart muscle that acts just like natural tissue. This advancement could be important in treating heart attack patients or in serving as a platform for ...
Medical research
May 06, 2013 |
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Global genome effort seeks genetic roots of disease
By decoding the genomes of more than 1,000 people whose homelands stretch from Africa and Asia to Europe and the Americas, scientists have compiled the largest and most detailed catalog yet of human genetic ...
Genetics
Oct 31, 2012 |
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Human heart
The human heart provides a continuous blood circulation through the cardiac cycle and is one of the most vital organs in the human body. It is divided into four chambers: the two upper chambers are called the left and right atria and two lower chambers are called the right and left ventricles. Normally the right ventricle pumps the same blood amount into the lungs with each bit that the left ventricle pumps out. Physicians commonly refer to the right atrium and right ventricle together as the right heart and to the left atrium and ventricle as the left heart.
The electric energy that stimulates the heart occurs in the sinoatrial node, which produces a definite potential and then discharges, sending an impulse across the atria. The Purkinje fibers transmit the electric charge to the myocardium while the cells of the atrial walls transmit it from cell to cell, making the atrial syncytium.
The human heart and its disorders (cardiopathies) are studied primarily by cardiology.
For more information about Human heart, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
