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Molecular & Computational biology
Jan 18, 2024
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Biotechnology
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Earth Sciences
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Researchers from the University of Helsinki and the Folkhälsan Research Center, together with their international partners, have identified the genetic background of dilated cardiomyopathy, a disease that enlarges the heart ...
Molecular & Computational biology
Sep 20, 2023
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Environment
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Shane Denson is an associate professor of film and media studies at the Stanford School of Humanities and Sciences. He's also a deep thinker about our data-rich world and the technologies driving it. Biosensing technologies, ...
Social Sciences
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Science often runs ahead of legislation—and this is now also true for research on embryo-like cell aggregates from human stem cells. Bioethicist Alessandro Blasimme of ETH Zurich explains why this controversial topic calls ...
Cell & Microbiology
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Biotechnology
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More Americans than ever are heeding the call of the outdoors—spending time recreating outside and enjoying national parks. Simultaneously, smoky skies are worsening as the size and severity of wildfires increase and adversely ...
Ecology
Jun 29, 2023
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Researchers from the University of Edinburgh, Scotland, and the University of Cantabria, Spain, have teamed up to develop an AI trained to discover senolytic medicinal chemistry in familiar compounds.
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.
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