News tagged with human heart

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Testing a soft artificial heart

ETH researchers from the Functional Materials Laboratory have developed a silicone heart that beats almost like a human heart. In collaboration with colleagues from the Product Development Group Zurich, they have tested how ...

Jul 13, 2017
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Organs-on-Chips get smart and go electric

Organs-on-Chips (Organ Chips) are emerging as powerful tools that allow researchers to study the physiology of human organs and tissues in ways not possible before. By mimicking normal blood flow, the mechanical microenvironment, ...

Jun 14, 2017
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Team discovers way to help heart failure patients

Shortness of breath is the No.1 complaint of people suffering from heart failure. Now a University of Guelph researcher has discovered its surprising cause - and an effective treatment - in a groundbreaking new study.

May 17, 2017
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Can yogurt each day keep the doctor away?

Diabetes, heart disease and inflammatory disorders threaten the health of many Americans. University of Nebraska-Lincoln researchers are investigating the gut microbiome in search of answers.

May 16, 2017
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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.

This text uses material from Wikipedia, licensed under CC BY-SA

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