Neuroscientists have typically thought of energy supply to the brain as demand-based. A supply-limited view offers another perspective toward aging and why multitasking can be difficult.
The body starts plugging up wounds as quickly as it can to prevent blood loss and infection.
Jonathan Knowles/Stone via Getty Images
People having a mini stroke can experience a variety of symptoms. The most important are weakness on one side affecting the face, arm or leg – or all three – or speech disturbance.
Patient-specific aorta models with diseased coronary arteries.
Alison Marsden
Computer simulation and 3D printing are allowing scientists to develop faster, safer ways to test medical devices without installing them in live humans or animals.
As they transport blood against the force of gravity, veins require special mechanisms to ensure that blood doesn’t flow backwards.
Colin Davis/Flickr
Veins are part of the body’s extensive network of blood vessels, returning blood back to the heart to maintain a continuous circulation. And when things go wrong with them, you can end up with varicose…