CIRCULATORY SYSTEM the circulatory system Youtube.com: Circulation http://www.youtube.com/watch?v=PgI80Ue-AMo http://www.youtube.com/watch?v=PgI80Ue-AMo http://www.youtube.com/watch?v=PgI80Ue-AMo Blood flows http://www.youtube.com/watch?v=PgI80Ue-AMo The Path of Blood Through the Body The Path of Blood Through the Body http://www.youtube.com/watch?v=PgI80Ue-AMo ♦ La circulación de los glóbulos rojos