Learn about the functioning of your heart's 4 chambers and the importance of the aortic valve. When this valve malfunctions, it effects the flow of blood throughout the body, and the heart has to pump harder to get blood into the aorta.

Watch this animation to discover the different conditions that can cause aortic malfunction and what doctors do to treat them.

Sponsored by Medtronic  for more information click here. Animation produced by Visible Productions Inc.

Whether it's falling or flying, Dr. Oz has the answers to why you have the dreams that you do and what they might mean.