using balloons in this cool science experiment! Watch how it pumps, just like the real thing, and learn how blood flows in and out of your heart!<br /><br /><br /><br />Watch 'iBilib' Sundays at 9:35 AM on GMA Network, hosted by Chris Tiu and Shaira Diaz.<br /><br /><br /><br />For more iBilib Highlights, click the link below:<br /><br />https://www.youtube.com/playlist?list=PLLYaldfT7P2Teh_NQfZBAjzvRkaF0KZuw
