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

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 ...

Both arteries and veins are types of blood vessels in the cardiovascular system. An artery carries blood away from the heart, and a vein carries blood back to the heart. Blood vessels are essential ...

The circulatory system is your heart and blood vessels, and it’s essential to keeping your body functioning. This finely tuned system carries oxygen, nutrients, electrolytes, and hormones throughout ...

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 ...