Browse A-Z A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 0-9 Heart valves Back Heart valves The valves of the heart open and close to control the flow of blood entering or leaving the heart. A.D.A.M. content is best viewed in IE9 or above, Firefox and Google Chrome browser. Content is best viewed in IE9 or above, Firefox and Google Chrome browser.
Heart valves Back Heart valves The valves of the heart open and close to control the flow of blood entering or leaving the heart.
