News tagged with human heart
New type of pluripotent cell discovered in adult breast tissue: Human body carries personalized 'patch kit'
(Medical Xpress)—UC San Francisco researchers have found that certain rare cells extracted from adult breast tissue can be instructed to become different types of cells – a discovery that could have important ...
Medical research
Mar 05, 2013 |
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Researchers use microRNAs to induce regeneration of heart tissue
(Medical Xpress)—A research team working at Italy's International Centre for Genetic Engineering and Biotechnology has succeeded in causing heart tissue to regenerate by introducing two microRNAs into damaged mice hearts. ...
Medical research
Dec 06, 2012 |
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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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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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Ten new diabetes gene links offer picture of biology underlying disease
(Medical Xpress) -- Ten more DNA regions linked to type 2 diabetes have been discovered by an international team of researchers, bringing the total to over 60.
Genetics
Aug 12, 2012 |
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Heart muscle cell grafts suppress arrhythmias after heart attacks in animal study
Researchers have made a major advance in efforts to regenerate damaged hearts.
Medical research
Aug 05, 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 |
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New research could lead to better treatments for cardiovascular disease
Scientists at the University of Southampton have discovered a new process that controls the ability of arteries to regulate blood pressure.
Cardiology
Apr 03, 2012 |
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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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Study uncovers molecular role of gene linked to blood vessel formation
University of North Carolina researchers have discovered that disrupting a gene that acts as a regulatory switch to turn on other genes can keep blood vessels from forming and developing properly.
Medical research
Apr 29, 2013 |
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Quit smoking? Vitamin E may give extra boost to heart health
Taking a specific form of a vitamin E supplement can accelerate the health benefits that occur when people quit smoking, new research suggests. In the small study, improvement in blood vessel function associated with the ...
Health
Apr 23, 2013 |
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'Clinical trials in a dish' may be more reliable than standard way of measuring drug effects on heart, researchers say
(Medical Xpress)—Last week, the common antibiotic Zithromax received a new warning label from the U.S. Food and Drug Administration indicating it could cause dangerous arrhythmias in people with pre-existing heart conditions. ...
Medical research
Mar 22, 2013 |
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Human heart tissue development slower than other mammals
The walls of the human heart are a disorganised jumble of tissue until relatively late in pregnancy despite having the shape of a fully functioning heart, according to a pioneering study.
Medical research
Feb 20, 2013 |
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Scientists identify new therapeutic target for coronary heart disease
Scientists investigating how certain genes affect an individual's risk of developing coronary heart disease have identified a new therapeutic target, according to research published today in The American Journal of Human Ge ...
Cardiology
Feb 14, 2013 |
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Epigenetic marker 5hmC opens door to studying its role in developmental disorders and disease
Nearly every cell in the human body carries a copy of the full human genome. So how is it that the cells that detect light in the human eye are so different from those of, say, the beating heart or the spleen?
Genetics
Feb 04, 2013 |
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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.
