Twenty years ago this month, the first draft of the human genome was publicly released. One of the major surprises that came from that project was the revelation that only 1.5 percent of the human genome consists of protein-coding ...
Feb 3, 2021
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A team of researchers from Carnegie Mellon University has published a paper in Science that details a new technique allowing anyone to 3-D bioprint tissue scaffolds out of collagen, the major structural protein in the human ...
Aug 1, 2019
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Two dozen scientific papers published online simultaneously on Feb. 18, 2015 present the first comprehensive maps and analyses of the epigenomes of a wide array of human cell and tissue types. Epigenomes are patterns of chemical ...
Feb 18, 2015
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Harvard scientists have merged stem cell and 'organ-on-a-chip' technologies to grow, for the first time, functioning human heart tissue carrying an inherited cardiovascular disease. The research appears to be a big step forward ...
May 11, 2014
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It may sound far-fetched, but scientists are attempting to build a human heart with a 3-D printer.
Apr 10, 2014
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A global hunt for genes that influence heart disease risk has uncovered 157 changes in human DNA that alter the levels of cholesterol and other blood fats – a discovery that could lead to new medications.
Oct 6, 2013
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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 variation. The ...
Oct 31, 2012
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Researchers have made a major advance in efforts to regenerate damaged hearts.
Aug 5, 2012
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Regenerative heart therapies involve transplanting cardiac muscle cells into damaged areas of the heart to recover lost function. However, the risk of arrhythmias following this procedure is reportedly high.
Apr 26, 2024
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Music holds an important place in human culture, and we've all felt the swell of emotion that music can inspire unlike almost anything else. But what is it exactly about music that can bring on such intense sensations in ...
Apr 4, 2024
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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.
This text uses material from Wikipedia, licensed under CC BY-SA
