Scientists from around the world are meeting in Washington this week to debate how best to proceed with research into gene-editing technology.
Biotechnology
Dec 3, 2015
1
731
Human activity, whether commercial or social, contains patterns and moments of synchronicity. In recent years, social media like Twitter has provided an unprecedented volume of data on the daily activities of humans all over ...
Social Sciences
Feb 28, 2017
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1735
The physiological processes associated with an acute psychological stress response produce changes in human breath and sweat that dogs can detect with an accuracy of 93.75%, according to a new study published this week in ...
Plants & Animals
Sep 28, 2022
0
1256
When it comes to oxygen, you can have too much of a good thing. Breathing air that contains higher levels of oxygen than the usual 21 percent found in Earth's atmosphere can cause organ damage, seizures, and even death in ...
Cell & Microbiology
Mar 9, 2023
0
139
In a scientific first, researchers at the Gladstone Institutes turned skin cells from mice into stem cells by activating a specific gene in the cells using CRISPR technology. The innovative approach offers a potentially simpler ...
Biotechnology
Jan 18, 2018
0
800
Rice University and Texas Heart Institute researchers are studying the use of soft, flexible fibers made of carbon nanotubes to restore electrical conductivity to damaged heart tissue.
Bio & Medicine
Aug 17, 2015
0
62
Circular mounds of rocks dot the desert landscape at the archaeological site of Tombos in northern Sudan. They reveal tumuli—the underground burial tombs used at least as far back as 2500 B.C. by ancient inhabitants who ...
Archaeology
Apr 13, 2022
1
128
Using recent advances in marine biomechanics, materials science, and tissue engineering, a team of researchers at Harvard University and the California Institute of Technology (Caltech) have turned inanimate silicone and ...
Biotechnology
Jul 22, 2012
15
1
Researchers at The University of Texas at Dallas are sweating the small stuff in their efforts to develop a wearable device that can monitor an individual's glucose level via perspiration on the skin.
Analytical Chemistry
Oct 13, 2016
0
17
On July 20, 1969, Apollo 11 astronaut Buzz Aldrin stepped out a lunar lander onto the surface of the moon. The landscape in front of him, which was made up of stark blacks and grays, resembled what he later called "magnificent ...
Space Exploration
Mar 3, 2021
0
228
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
