You remember how Dorothy, Toto, and the rest of the gang were trying to make their way to see the Wizard of Oz? That’s kind of how veins work in relation to your heart. Your heart is the wizard, and ...

Researchers from Cornell University and the University of Pennsylvania have created a lifelike robotic lionfish with a circulatory system, reports Gizmodo. That circulatory system enables the fish to ...

There are many different circulatory system diseases, all of which interrupt the complex process of distributing blood around the body. Examples include atherosclerosis, heart attack, and arrhythmia.