News tagged with human heart
Engineering tissue to rebuild damaged bones and organs
From the chimera in Greek mythology to the sphinx in ancient Egypt, humans have imagined making creatures from pieces of different organisms for millennia.
Medical research
May 15, 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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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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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 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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Sunshine could benefit health and prolong life, study suggests
Exposing skin to sunlight may help to reduce blood pressure, cut the risk of heart attack and stroke – and even prolong life, a study suggests.
Health
May 07, 2013 |
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Carnitine supplement may improve survival rates of children with heart defects
A common nutritional supplement may be part of the magic in improving the survival rates of babies born with heart defects, researchers report.
Pediatrics
May 08, 2013 |
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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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Researchers find amygdala not always necessary for fear
(Medical Xpress)—Researchers at the University of Iowa have found that three volunteer women with defective amygdalas were able to experience internal fear. In their paper published in the journal Nature Ne ...
Neuroscience
Feb 04, 2013 |
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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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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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Scientists turn patients' skin cells into heart muscle cells to repair their damaged hearts
For the first time scientists have succeeded in taking skin cells from heart failure patients and reprogramming them to transform into healthy, new heart muscle cells that are capable of integrating with existing heart tissue.
Cardiology
May 23, 2012 |
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Long non-coding RNA molecules necessary to regulate differentiation of embryonic stem cells into cardiac cells
When the human genome was sequenced, biologists were surprised to find that very little of the genome—less than 3 percent—corresponds to protein-coding genes. What, they wondered, was all the rest of ...
Medical research
Jan 25, 2013 |
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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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Pioneering heart disease treatment
(Medical Xpress) -- Researchers at King's College London have developed the first artificial functioning blood vessel outside of the body, made from reprogrammed stem cells from human skin. The team also ...
Cardiology
Aug 15, 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.
