Get to know the functions of your heart, blood vessels, and blood itself and how they work together to maintain your health.

Arteries are blood vessels. Most carry oxygen-rich blood from the heart to various organs and tissues. Arteries are a part of the circulatory system, along with the heart and other blood vessels. The ...

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 ...