Your circulatory system works all day, every day, to pump oxygen throughout your body. There are cardiovascular conditions that can impact this system. Your circulatory system, also known as your ...

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 ...

For once, the Greeks had no word for it: they neither understood nor named the body’s system of glands and connecting channels through which colorless fluids flow. The Romans did coin a name, but for ...

What Causes a Baby's Blue Skin? There are two reasons why the blood under a baby's skin might look blue: You can tell if there is insufficient oxygen in the blood by checking the color of the skin all ...