Medically reviewed by Michael Menna, DO Key Takeaways The body's organ systems include your circulatory and respiratory ...

Why your toes get the short end of the circulation stick Your circulatory system works against gravity to pump blood from your heart to your extremities and back again.

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 ...