http://www.smm.org/heart/lungs/top.html
http://kidshealth.org/kid/htbw/heart.html
http://www.goremedical.com/contentTypeDetail.jsp?action=contentDetail&N=8063+8239&R=1266716747603
http://www.naturalhealthschool.com/8_1.html
Http://www.google.com
http://www.stanfordchildrens.org/en/topic/default?id=tetralogy-of-fallot-90-P01822
http://www.tooloop.com/picture-arteries-of-the-human-body-blood-vessels/