Coronary arteries are a vital part of the human heart, providing it with oxygen-rich blood so that it can work. By comparing the hearts of mammals, birds, reptiles, fish and frogs, a ...

Cardiologists are doctors who specialize in the treatment of the cardiovascular system—which includes the heart and blood vessels. Cardiologists also educate habits that promote heart health. These ...

You already know that keeping your heart in tip-top shape is a key part of maintaining your cardiovascular health—but your cardiovascular system goes beyond that beating organ in your chest. After all ...