Cardiovascular or circulatory diseases are those that involve the heart or blood vessels. Comprising everything from coronary artery diseases, such as heart attacks and angina, to strokes, aneurysms ...

Your body's circulatory system is a wondrous thing. It's made up of blood vessels that carry blood to and from your heart and also pumps blood to your lungs so you can breathe. It helps grow and ...

If you look at parts of the circulatory system of whales and dolphins, you might think that you are looking at a Jackson Pollock painting, not blood vessels. These cetaceans have especially dense, ...